#5 could be a Master. Brushed patch.
What you're seeing as a pontil on #8 is likely damage. I'm not seeing the seams like I would like but from these views, Peltier Rainbo is a good possibility. This particular Rainbo would have a collector's name. It would be called a Sunset.
#9 is a Vitro Conqueror.
#1, #7, #10, and #11 I'd like to see more views of.
To me #2, #3, #4, #6, and #12 all look like Moss Agates. Some of the others might also be Moss Agates.
Akro is most famous for making Moss Agates. Master also made some of that general style. Probably lump your Moss Agate patches together for awhile, and think of them as Akros and not worry if some might be Masters.
And as soon as I say that, I wonder about #4. It looks a little different. Let's add #4 to the list for more views.