This took a fair while. A handful of characters are still missing, but here's the vast majority!
Unlike Xenoverse, these names are not referred to as is, there usually a prefix

e.g. the character models have the name "bc[a-z0-9]{3}" as in bcgok for goku, or bc16g for android 16


16G - Android #16
17G - Android #17
18G - Android #18
1SD - Omega Shenron
20G - Dr. Gero
21G - Android #21
ACA - Aka / Abocado
AGL - Angol
AMD - Amond
AMS - Ahms
ANG - Angila
ANZ - Anilaza
ARK - Arack
ARL - Arale
AVO - Abo
AZH - Zaripai
AZY - Amepai
BAB - Babidi
BAT - Burter
BBB - Bio-Broly [Giant]
BBR - Bio-Broly
BDK - Bardock
BDO - Bido
BIB - Bibidi
BIO - Bio-Man
BJH - Bojack (Majin)
BJK - Bojack
BJN - Bujin
BMB - Majin Buu (Super) [Giant]
BLS - Beerus
BLU - General Blue
BMB - Majin Buu (Super)
BNG - Vinegar
BON - General Bon
BRG - Bergamo
BRH - Broly (Majin)
BRI - Barbarian
BRL - Broly
BRO - Dark Broly
BSR - Demon Realm Spider
BTM - Botamo
BUL - Majin Buu
BUM - Majin Buu (Evil)
BUO - Majin Buu (Xeno)
BUS - Majin Buu (Pure)
BUT - Evil Buu
BYS - Baby
CAB - Cabba
CAD - Cado
CAG - Kagyu (Human?)
CBR - Kabra (Human?)
CBU - Majin Buu (Clone)
CCE - Cell (Clone)
CEL - Cell
CFR - Frieza (Clone)
CGH - Gohan (Clone)
CGN - Captain Ginyu (Clone)
CGO - Goku (Clone)
CHI - Chilled
CKL - Krillin (Clone)
CLD - King Cold
CLF - Caulifla
CLJ - Cell Jr.
CLO - Cell (Xeno)
CLX - Cell X
CNA - Nappa (Clone)
COO - Cooler
COZ - Chiaotzu
CPI - Piccolo (Clone)
CTR - Trunks (Clone)
CVG - Vegeta (Clone)
CYM - Yamcha (Clone)
DBR - Dabura
DBX - Dabura (Xeno)
DCK - Dr. Kochin
DCL - Dr. Lychee
DCM - Dr. Myuu
DCW - Dr. Wheelo
DDB - Wings
DDR - Dodoria
DIZ - Daiz
DMB - Demigra [Giant]
DMG - Demigra
DOR - Dore
DSK - Great Priest
DSP - Dyspo
DSR - Demon Realm Soldier Δ
EBI - Ebifurya
FRE - Froze (Human?)
FRF - Frieza (Revival)
FRO - Frieza (Xeno)
FRZ - Frieza
FST - Frost
FUU - Fu
G13 - Android #13
G14 - Android #14
G15 - Android #15
G19 - Android #19
G2K - Dr. Gero [ALT]
G6K - Android #16 [ALT]
G7K - Android #17 [ALT]
G8K - Android #18 [ALT]
GAS - Spice
GGL - Veku
GGO - Gogeta (Xeno)
GGT - Gogeta
GHF - Gohan (Future)
GHG - Gohan (GT)
GHL - Gohan
GHM - Gohan (Teen)
GHO - Gohan (Xeno)
GHS - Gohan (Kid)
GII - Geene
GIN - Ginger
GJH - Garlic Jr. (Majin)
GJR - Garlic Jr.
GKA - Kogu
GKB - Goku Black
GKG - Goku (GT)
GKM - Goku [ALT]
GKO - Goku (Xeno)
GKS - Goku (Kid)
GNE - Gine
GNS - Ganos
GNY - Ginyu
GO2 - ???
GOK - Goku
GRD - Guldo
GRV - Gravy
GS2 - Great Saiyaman 2
GS3 - Great Saiyaman 3
GS4 - Great Saiyaman 4
GSM - Great Saiyaman
GTA - Gokule
GTG - Goten (GT)
GTN - Goten
GTO - Goten (Xeno)
GTV - Vegeta (GT)
GTX - Gotenks
GWS - Gowasu
GXF - Gotenks (Adult)
GXL - Gotenks (Fat)
GXO - Gotenks (Xeno)
HAC - Hatchiyak
HAR - Haru Haru
HBY - Hatchiyak (Baby)
HCB - Hatchiyak (Super)
HCH - Hatchiyak (Majin)
HDG - Hirudegarn
HDH - Hirudegarn (Majin)
HF7 - Android #17 (Hell Fighter)
HIT - Hit
HOI - Hoi
HXL - Future Gohanks (DB: Fusions)
HXO - Gohanks (Xeno)
HXS - EX Gohanks (DB: Fusions)
IWN - Iwne
JAK - Jaco
JBB - Janemba [Giant]
JBH - Baby Janemba (Majin)
JBY - Baby (Janemba)
JES - Jeice
JKC - Jackie Chun
JNB - Janemba
JNH - Janemba (Majin)
JNO - Janemba (Xeno)
JSA - Evil Saiyan
KAK - Greatdevilman
KAL - Kale
KBT - Kibito
KFL - Kefla
KIS - Kishime
KKO - Cacao
KLL - Krillin
KLS - Krillin (Kid)
KMS - Master Roshi
KOB - Supreme Kai (North)
KOD - Supreme Kai (Grand)
KOK - Supreme Kai (Kibito)
KON - Supreme Kai (South)
KOS - Supreme Kai
KOT - Supreme Kai Of Time
KOZ - Supreme Kai (West)
KPR - Katopesia
KRB - Pirate Robot
KRZ - Kuriza
KS7 - ???
KSA - Masked Saiyan
KSB - Bardock (Xeno)
KSC - Dark-Masked King
KTL - Quitela
KVG - Black-Masked Saiyan
LBR - Ribrianne
LDL - General Rildo (Metal)
LDM - General Rildo (Hyper)
LDS - General Rildo
LFR - Frieza (Link)
LGO - Goku (Link)
LKS - Lakasei
LQR - Liquiir
LZN - Rasin
MAG - Magetta
MAI - Mai
MCC - Cooler (Metal, Core)
MCK - Meckikabura
MDM - Medamatcha
MGA - ???
MIN - Minotia
MIS - Misokatsun
MKR - ???
MLA - Mira
MOA - Moah
MOC - Cardinal Mutchy Mutchy
MRK - Marcarita
MSC - Mosco
MSK - Murasaki
MTM - Mighty Mask
MUC - Mutchy Mutchy (True Form)
NAP - Nappa
NER - Nail
NEZ - Neizu
NIK - Nicky
NIM - Nim (Human?)
NMJ - Neko Majin V
NMM - Neko Majin Mix
NMZ - Neko Majin Z
NOT - Note (Human?)
NPS - Nappa (Young)
OSA - Great Ape Raditz
OSB - Baby (Great Ape Baby Vegeta)
OSD - Great Ape Bardock
OSG - Golden Great Ape Goku
OSH - Great Ape Gohan
OSK - Great Ape King Vegeta
OSL - Great Ape Broly
OSM - Great Ape Tora
OSR - Great Ape Vegeta
OSS - Great Ape Masked Saiyan
OST - Great Ape Gogeta
OSX - Great Ape Bardock (Xeno)
OVN - Obuni
P3B - King Piccolo [Giant]
P3G - ???
PAN - Pan (GT)
PAS - Pan
PBK - Shugesh
PC3 - King Piccolo
PCK - Kami
PCM - Piccolo Jr. (Young)
PET - Helper Robots
PFM - Pilaf Machine
PGO - Paragus (Xeno)
PGS - Paragus
PIC - Piccolo Jr.
PKH - Pikkon
PKK - Pikkon (Super)
PKY - ???
PLG - ???
PMB - Piccolo (Battle Damaged)
PSR - Demon Realm Soldier Ω
PTN - Putine
PUI - Pui Pui
QUI - Cui
RAD - Raditz
RBH - Cooler's Cyclops Robots
RCM - Recoome
RDR - God of Destruction Luud
RUM - Rumsshi
S13 - Super Android #13
S17 - Super Android #17
S2B - Haze Shenron (Super)
S2D - Haze Shenron (Super)
S3D - Eis Shenron (Super)
S3H - Super Android #13 (Majin)
S4D - Nuova Shenron (Super)
S5B - Rage Shenron (Super)
S6B - Oceanus Shenron (Super)
S6D - Oceanus Shenron (Super)
S7B - Naturon Shenron (Super)
SAK - Psidevilman
SAN - Sansho
SBM - Saibaman
SBY - Baby (Super Baby Vegeta)
SD1 - Syn Shenron
SD2 - Haze Shenron
SD3 - Eis Shenron
SD4 - Nuova Shenron
SD5 - Rage Shenron
SD6 - Oceanus Shenron (True Form)
SD7 - Naturon Shenron
SDD - Black Smoke Shenron
SDR - Sidra
SGM - Super Mega Cannon Sigma
SHM - Demon God Shroom
SHP - God of Destrutcion Champa
SHU - Shun Shun
SLA - Sealas
SLB - Lord Slug [Giant]
SLG - Lord Slug
SLH - Lord Slug (Majin)
SLJ - Lord Slug
SLO - Lord Slug (Xeno)
SLP - Fasha
SLS - Demon God Salsa
SMR - Chamel (Human?)
SNM - ???
SNR - Shenron
SOU - Salza
SPP - Spopovich (Majin)
SRB - Sorbet
SSL - Super Shenron
SSM - Shisame
SSR - Reaper Soldier
STG - Mr. Satan (GT)
STN - Mr. Satan
SUB - Uub (Majuub)
TAD - Mustard
TAP - Tapion
TBL - Tarble
TBY - Super Baby Trunks
TGM - Tagoma
TGT - Trunks (GT)
TLH - Turles (Majin)
TLO - Turles (Xeno)
TLS - Turles
TMB - Tambourine
TOB - Toobi
TOM - Tora
TOP - Toppo
TPC - Tao (Cyborg)
TPI - Tao Pai Pai
TRF - Trunks (Future) [Hot/DBS]
TRM - Trunks (Xeno)
TRO - Trunks (Xeno) [Sword]  
TRS - Trunks
TRX - Trunks (Future) [Z]
TSH - Tien
TSR - Demon Realm Soldier Σ
TTP - Borgos
TUR - Master Shen
TWA - Towa
UBL - Uub (GT)
UUB - Uub
VBY - Baby (Vegeta)
VDL - Videl
VDS - Vados
VGB - Baby (Super Baby Vegeta 2)
VGK - King vegeta
VGO - Vegeta (Xeno)
VGS - Vegeta (Kid)
VGT - Vegeta
VGX - King Vegeta
VKO - Vegeks (Xeno
VMD - Belmod
VTO - Vegito
VTX - Vegito (Xeno)
WIS - Whis
XRS - Heles
YMC - Yamcha
YMU - Yamu (Majin)
ZB2 - Zarbon (Transformed)
ZBN - Zarbon
ZEN - Zen (Human?)
ZGY - Zangya
ZLD - Salt
ZMS - Zamasu
ZMU - Zamasu (Fused)
ZNB - ???
ZNO - Zen-Oh
ZRN - Jiren
ZUN - Commander Zeeun

BET - <PLAYER REFERENCE>
MDB - Demon God Berserker (???)
MDE - Demon God Elite (???)
MDH - Demon God Hero (Chamel)
MFB - Frieza Berserker (???)
MFE - Frieza Elite (Rezok)
MFH - Frieza Hero (Froze)
MGB - Saiyan [F] Berserker (Forte)
MGE - Saiyan [F] Elite (Viola)
MGH - Saiyan [F] Hero (Note)
MJB - Android Berserker (Genome)
MJE - Android Elite (Nico)
MJH - Android Hero (Nimu)
MKB - Kaioshin Berserker (Wairu)
MKE - Kaioshin Elite (Fen)
MKH - Kaioshin Hero (Zen)
MNB - Namekian Berserker (Kagyu)
MNE - Namekian Elite (???)
MNH - Namekian Hero (Tsumuri)
MMB - Majin Berserker (Salaga)
MME - Majin Elite (Yoshito)
MMH - Majin Hero (Kabra)
MSB - Saiyan [M] Berserker (Basaku)
MSE - Saiyan [M] Elite (Erito)
MSH - Saiyan [M] Hero (Beat)