I agree Skans, but it's going to be really tough to put together a list with any real creditability.
I could say CZ, Kahr, Les Baer, DW, Wilson, Ed Brown, Night Hawk Custom, H&K, and others. The only problem with this list I'm making is that it's just speculation. I "Think" they don't use MIM, but some may use MIM in a manor unknown to me. It's kind of like KAHR, their using it in their CW series, so what's to stop them from sneaking it into some of their other models. It's not like they have to tell us, how would we know unless we worked for them.
I'd still like to see a list of manufacturers that we don't believe use MIM....
DBAR