1,2,3 MK
Thinking Akro on 4
Modern MK on 5.
6 Vitro
7 Modern Asian
8,9,10 I don't know who either
11 Akro
12 ... counts as a solid-color marble ... I think I'm seeing a longish, straightish seam so could be Akro, but won't rule out other long-seam choices such as Vitro.
Ya, "swirl" on the last blue and white one