I would call it a stall turn, understanding that it is a misnomer, as that is just what they're called over here. I thought the alternate name was a hamerhead turn, not a hamerhead stall. I think hammerhead turn is a good descriptive name for the manoeuvre.
Positive g aileron roll or an aileron roll performed badly? It all depends on what you are trying to achieve and who your audience is. I think I've done something like 4000 loops, all in the first few years of my career. The vast majority of them were probably quite egg shaped. Why? Because my audience was the passenger sitting in the front seat, not a judge sitting on the ground, and my goal was to make my manoeuvres smooth, positive, and enjoyable. An aileron roll with a touch of positive g is a good thing when your audience is the person sitting in the passenger seat, it doesn't matter that it won't get you points in an aerobatics competition.