What commander should I build? I like Ashling, the Limitless, Teval, the Balanced Scale, and Zurgo, Stormrender!

[u/MatToMountain]

Hi all. I've been playing Magic for a little under a year. I mostly play standard and sealed on Arena, where I have ~400 hours of play. I do play quite a bit of paper commander, but not as frequently. I'm not much of a deck builder (yet!). I have bought quite a few precons, and have slowly been upgrading them over time. I have never built a commander from scratch. I have the most fun with Ashling, Teval, and Zurgo. Based on those interests, what would you recommend building next? I'm considering life-gain/drain, spell slinging, and/or something kindred. That said, I'm open to anything! Shooting for high 3 to high bracket 4. Thanks!