Succor Bemoth's Greater Demon trick for Deific Powers and unlisted species

[Plane]

This is regarding page 203 of Dragons and Gods, where the listed demons who can be substituted are five types: Baal'rog, Jinn, Magot, Raksasha, Locust

Subsequently we know there are other kinds of Greater Demon though:

1) the Dysasha - a canine/ursine dog/bear variant similar to Raksasha, introduced in Rifts Mercs originally and then Prince Halhag of Cormal is a bear-like one I think

2) the Death Demon - most notably worrying since they were created by the Raksasha trying to interfere with Succor's experiments, and being the only type of Demon with a clear way to reproduce

3) the Gallu - these are a core PF2 greater demon (page 322 after the locust, preceding the Jinn)

4) the Night Owl - also a core PF2 demon mysteriously left out of D+Gp203 - found on page 324 after the Magot, preceding the Raksasha

Do you figure these four species of Greater Demon from Hades are all safe from Succor Bemoth's experiments? An oversight?

also there's the Greater Russian Demon and Greater Chinese Demon species worth thinking about - could they be captured and utilized instead of allies?