Honest, I tried a search. So in these times of scarce supply, are there brands to stay away from? I mean, can one assume if a particular brand is readily available, it for a reason?
Sorry.
Glock 19 9mm
Ruger Mark III .22LR
Ruger GP100 .357/.38
Let me first say this is all just my personal opinion. My personal favorite practice ammo brands are Fiocchi & S&B, followed by Magtech/PMC and then AE/Lawman and finally WWB/UMC/Wolf/Blazer etc. I find the brands I like most to be cleaner (and hotter).
My ranking is close to the same, except I'd put PPU/Prvi Partisan in there with Fiocchi and S&B, and RWS somewhere up there with them or Magtech/PMC, too. I've like Blazer better than you do, and would put it and WWB a definite step ahead of the others you've put in that group.
I avoid Remington/UMC when I can. I find it to be dirty and inconsistent, at least as dirty as Wolf, maybe worse.