Identify these tool holders

[Shotgun]

I got a box of nmtb30 tool holders, and just a handful I can't identify. Any ideas?


From top left, going clockwise:

• It's a 30 taper, but not Erikson Quick Change, so it won't fit my Bridgeport
• It's a little pitted from rust. Looks like an ER collet, but just the base of an ER-32 fits
• Still a 30 taper, but I don't know what sort of machine uses those round pegs
• 30 taper, but that huge flange doesn't fit
• A couple collets that don't seem to fit any of the holders
• A small collet holder. Mayber ER-16, but I don't have any of those so can't rightly tell.