RGB96 firmware code base?

[NV-GCK]

Team,
Where can I get the original QMK firmware for the RGB96 keyboard? I want to create my own custom version with some modifications. Does this PCB use the code of a different QMK 96 PCB? The QMK git has support for:
adkb96/rev1
amj96
budget96
dz96
ep/96
function96/v1
function96/v2
idobao/id96
mehkee96
melody96
snap96
xd96
ymd96
Please advise and thank you loads