I'm nominating a fandom that I've written the only fanfic for: On a Sunbeam - Tillie Walden. It's a webcomic turned into a print comic. While none of the tags are canonized, all characters mentioned are canonically female. Here's my noms page:
https://archiveofourown.org/tag_sets/3355/nominations/120872

I've also nominated a bunch of other not-previously-used tags (all female characters), but that's a bit less confusing/more normal for everyone involved. Please let me know if you would prefer I use more disambiguation for any nominations!