One popular theme is Komi-san's attempts at making more friends. Another could be Komi-san's experiences in different social situations outside of school. Also, fanfics might focus on the relationship between Komi-san and Tadano developing further in various scenarios.
Another option is Reddit. There are specific subreddits dedicated to Komi - san where fans might share their own fanfics or recommend good ones they've read. It's a great community to interact with other fans as well while looking for good fanfic.
Honestly, 'yo en caricatura' is a bit of a mystery. It could potentially refer to one's representation or appearance in a caricature. Maybe it's a phrase from a specific language or cultural context that we're not familiar with.