Since "∀" is a special character most people have no idea how to type, most people will search for or discuss it as "Turn A". Thus "Turn A Gundam" should be a tag or in the description (it's fine to use "∀ Gundam" in the title) so it will show up for searches in that

Incidentally: If you're building these LoRAs off screenshots alone and are keeping your tagged training data, you can actually make a style LoRA once you've got enough data. Just combine all the tagged training data for the series (plus maybe add some no humans/scenery pictures), and add a main trigger then train it as a style. The most taxing part of doing a style is picking the 100+ good screenshots needed and tagging them, but if you've already selected and tagged them for making the characters it wouldn't be nearly as hard to deal with. (Just don't bother with X because I already made a style for that series)