Such as femboy, tomgirl, bisexual, equines, bunnies, mythical beast, and several more, just more to make it a little easier to either filter or hit the right mark.
Yes there is custom but sometimes rewriting or copying someone’s else’s tag gets tiresome.
You know, it’s been a while. Those aren’t hardcoded anymore and we can add them easily. Let’s make this a discussion thread about this.
Kemonomimi, human, taur, feral, and anthro tags might be fitting, but I think more specific races might be a bit… extensive?
Honestly, the ability to create specific tags far outweighs adding more to the current system.
Yes, it may seem limited, but making it larger would very quickly become too large.
My only suggestion would be an ‘f-list’ tag that players could input their f-list link that would show up the usual blue of a clickable link, could only be selected ‘positive’.
It might be sensible to simply add the top-25 or top-50 custom tags, sans obvious duplicates, and perhaps only considering tags once per player so as not to overweigh those with multiple characters but similar interests.
This information is publicly accessible for all characters via whois, other than which player owns which characters, but of course would be faster to collect with a DB query.
The default tags really do need some more additions. Custom tags are nice, but I find there’s a few problems - majorly that the number of synonyms, alternative spellings and typos can damage searchability. If something is a common enough interest it really should just be a default option.
The other thing that really bothers me is custom tags being at the top of the list - it really feels like I’m trying to highlight a specific thing, when it may not even be one of my major kinks. I think this is great if you have something you really want to note there, but not when it’s a common thing that should just be a regular tag.
I, along with other, actually suggested a whole bunch of tags in an older thread: Proposal | Addition of a Maybe tag + Additional tags suggestion.
I like that the custom ones are first. They’re the ones I tend to spend more time looking at. So I like that they are together.
I do think we need to be careful in adding only a small selection more of tags, across assorted categories. No more than 10-15 for a small expansion.
I would say based on custom tags that I’ve seen. ‘watersports’, ‘scat’, and ‘pokemon’ would be popular ones to include (Both on positive and negative considerations), as well as the mentioned ‘equines’, ‘anthro’, perhaps ‘non-anthro’ over ‘feral’. Custom tags mean we want new ones to be popular as well as useful; tags that people are using often enough and are likely to consider for plusses and minus when looking for interactions.
‘Feral’ seems to be the accepted term within the roleplaying community, despite - or perhaps because of - its slightly ambiguous nature. In fact, ‘non-anthro’ has the same issue of whether you’re talking about physical or mental status.
I just did a search and there were six uses of ‘feral’ - three in species, three in tags - and zero for ‘non-anthro’, ‘nonanthro’ or ‘zoomorphic’. (There were also three uses of ‘anthro’, but all in species, for characters such as snakes which might otherwise be assumed to be limbless.)
Of course, if people feel it requires further explanation, they can turn it into a custom tag, as Cuprohastes and Axel Hayes have! 
Or ‘pokémon’ is more accurate, but also harder to search for. Ideally the client would use the string normalisation and diacritic replacement methods on the search term and inputs (preferable over a manual accent map) so that either would match. String.normalize() has been around a decade now, so should be safe to use.
We use that extensively already and I’m not sure this would be different.
I see it using String.localeCompare here and here among other places, but it looks like that’s insufficient to ignore diacritics without additional options to switch it to base/primary level. I’ve filed an issue on GitHub for that.
‘sapient feral’ and ‘nonsapient feral’ are the easy two ways to add this in without overwhelming the tag system. Throw in an ‘anthro’ tag and a ‘human’, and you’ve covered all possible classes of character.
Well… ‘eldritch horror’ might be a neccessary one, too. Haven’t seen many of them around Wolfery though, unfortunately.