Has anyone looked at Pokémon Cultivation yet?
https://man-do-not-hop.itch.io/pokemon-cultivation/ It has hypnosis, non-con, NTR and quite a bit of monologuing... That being said, you get to knock up 8~10 event Pokémon (complete with Poké-Eggs) that hatch into hybrids + several Human can be impregnanted, also May does get some belly growing (I believe someone else does too, forgot who). It has numerous Quests and I got my 'Mons almost to lvl 40 because of them (too bad the game has content locked to Dewford Town atm).
The developer is looking into 'Daycare-like system where the Trainer can just breed with any caught Pokémon (*cough* probably one not too dissimilar to the one Expectant Emerald has *cough*). Not sure if they are aware of this game or not, although I have yet to see if this game was mentioned there yet...
I am not anticipating either developers to wanna collaborate or combine forces. I do wish both games to succeed however because I am enjoying both.