At a glance Tokime (Fuuto Tantei) is missing, I believe everything should be available via Gumroad so it can be used to check what is missing, at least as far as previews are concerned. There are for example also the comics of which I don't think I have seen any here, and there should also be animations of which none are included here as a gif for example (unless they may be posted separately).
From what I can see, the September 2023 Fate Theme Pack is also missing, but that hasn't been uploaded anywhere yet. Either way, thanks for putting them all in a single gallery.
Some older content is also missing I think, I believe some may have been free but others possibly censored still, what comes to mind is Fairy Tail and Tokyo Ghoul.