From the list I can only stan for Gaga, I've stanned for Bey (I am still a fan) and I think I can stan for Riri and P!nk. I kind of stanned for Katy during her first era as well so who knows .. (I don't like her stuff tho so probably not) as for the others, I've never stanned so I guess I can't stan for them for one reason or another.
Edit: I can probably stan for Adele as well (more for her music tho, cuz she ain't interesting to stan for )
Hm. Most of these artists I'm not a huge fan of and I doubt I'll ever be, but tastes change and evolve so I don't want to say never to them.
I don't see my tastes ever changing to the point where I could stan for Taylor, Miley, Christina, Pink, Iggy, or Demi, though. Lana, too, even though she's not on the list.