OK, Mamm 2 is, I think, M. karwinsiana v. nejapensis
Now Mamm 1 is more difficult, because to me it looks like some forms of M. formosa that I have seen, which are different from the formal description, mainly in the number of central spines, and I have one form in my collection which has the two dark short central spines like your plant. However, the flowers don't quite look right, more striped than I would expect.
I'll keep on thinking about that one!
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Chris43, moderator