Foul Play - Currently only a demo but looks like it's going to be lesbian only.
Not actually sure of this myself but
Angelic Acceptor: Alouette looks like it might have a full lesbian run
although is NSC (edit: apparently it does, just has an option for it). I think pretty much all their games are lesbian ones.
Also, think I suggested before -
Bondage College, has no dudes at all except one implied on a bad end. For the abandoned pile though. Honestly still disappointed that they dropped this for
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(which I think is also lesbian-only and can probably go on the list but doesn't have a topic here IIRC) because the mostly storyless approach in that just doesn't seem as fun. I'm giving it another go atm and they have some interesting stuff but it doesn't do much for me without the story.