Bulbapedia is a pretty standard wiki with a few color tweaks, so you could probably grab a wiki template and go from there. I don't have any offhand, since they're not my vibe, but they're a pretty common find in free/p2u code hubs.
Looking for a template that looks like Bulbapedia for my Fakemon. Any suggestions?
I have a faves folder dedicated to codes and theres 3 wiki codes I kinda like that might be able to help you out.
https://toyhou.se/2049609.-f2u-wiki-clean https://toyhou.se/1120534.wikia-v2 https://toyhou.se/1153625.wiki-profile
and since you mentioned pokemon i wanna mention https://toyhou.se/2357406.-f2u-pokesummary its my personal fave when it comes to poke profiles but that's just me. Good luck finding one that you like tho