Honestly it's pretty silly that Danbooru keeps using the increasingly cluttered class names for works where the class-servant association isn't nearly as strong (or hidden). I always have trouble finding Apocrypha servants because I can't remember which team they belong to.
It makes some modicum of sense in that you're looking for a certain likeness that started as Fate Extra Caster. Kinda like the Rebuild Asuka implicates classic Asuka - they look the same for the most part, after all, one just implicates a certain costume more.