The following Emote gets rejected as Obscene. Gasm is allowed but not with fluid on it.
After looking up shared Gasm-Emotes i listed a few that have fluid on it and got approved:
spadesgasm
tacogasmx
02Gasm
transorgasm
durogasm
gasmm
sallangasm
nimogasm
rudegasm
graphicsgasm
lougasm
Just want to know how they made it through the approval^^
Regarding fluid on emotes a lot of the ones you listed are those which have been approved a while ago and the situation regarding liquid on gasm emotes has changed, it is ultimately the judgement of the emote approver regarding if it is too lewd or not.