Ambiversion - that was new to me. Extrovert and introvert, yes. But not ambivert. According to Wikipedia:

An ambivert is normally comfortable with groups and enjoys social interaction, but also relishes time alone and away from the crowd.

This solves a puzzle for me. I've always felt more introvert than extrovert, but I'm not really that introvert. I love time alone, but I can also find great joy being with other people, both one-on-one and in groups.

Ambivert it is.