1. is most certainly Melt Away, from Summoned. First image I saw of yours, (and I bought the shirt!) 2. is probably the image of Peter Pan and Alice, it's very dynamic! 3. is probably the image of Ginger and Cotton from when you were showing off your OCs (Those two in particular I'd love to see more of!). Maybe not the most instantly recognizable from a style standpoint, but they've all stuck with me for various reasons, and are thus the first I think of when I think of your art.
All of these are good choices!
I’m glad these are the ones you think of! I put a lot into all of these <3