I am probably all emotions as well. I can get quite excited about things I really like and enjoy (example - nature, new places, board games with friends), but that shows in momentary bursts, it's not a sustained animation. And ofc I can get low, on the opposite end. I am probably mostly.... 'flat' and might appear fairly even-keeled, steady, calm, maybe even monotonous in voice inflection, though, when interacting with people. I've been told I'm anti-exuberant / demonstrative in social situations, ha.
When I was younger (teenage years into mid to late 20's) I was much more often melancholic; I swing in that direction less often these days. I can be quite happy and content more often these days.