The first King Tubbys is Octopuss.
the dub inventor is Broadway.
The second King Tubby's is Pump Demi.
Sinclair Sounds is Souvenir Light.
SPECIALIST appears to be Bologna, which hasn’t received a proper digital revival. Mikadan is a tribute to Bologna; Romeo DN (free for personal use only) seems to be an uncredited revival.
In case someone is curious and doesn’t see the related post with the third ID, Natty et al. is Rockwell.