>>54156131As a Spinda autist who has been everywhere looking for anything, you are absolutely right. For Pokemon like Poipole and Spinda you have to go the extra mile for content and recognize which sites supply the best material. Twitter is awful in terms of finding art, but it has a lot of good ones. Pixiv is a great start, but checking all boorus and even diving into places like tumblr might be required. Even places with lots of porn you might need to just use filters to get around the stuff and get to just the art. It is a chore too keep looking and looking, but those rare moments when you do find something really good its always a good time.
To help out at least a little, here is the Poipole tag for Pixiv as an example to help search.
https://www.pixiv.net/en/tags/%E3%83%99%E3%83%99%E3%83%8E%E3%83%A0 