I haven’t updated this list in a while (anyone else is welcome to do so though!) So there are a few more free ones about like Zoopocalypse which was released more recently.
You can also do a choicescript search on itch.io which will bring up some extra games, most of which are free over there.
There are a few more unpublished ones on dashingdons and IFComp but require a bit more searching to find.
This thread is also worth checking out (not all are choicescript, but the ones that aren’t are similarish like twine or ink.) Twine & Other Text-based Interactive Fiction games recommendations from Itch.io