Help ID old plants

Ok these are some of the plants I bought years and years ago and I have no idea what they are. If you could help me with the genus I can probably sort out the rest





I have no recollection of this one, it may have been columnar and it's been split into about six large plants, and there's offshoots everywhere!




This is one smaller plant, I have a huge branched one in the garden




and a barrel




I think this one gets yellow flowers




I vaguely recall buying this one as two tiny plants, it's shot about another three off, it used to be a barrel shape but it's getting columnar now...

Are these another form of Mamms? I have two massive clumped ones but these are the teeny sort

The first two appear to be some sort of Echinopsis, quite possibly a hybrid of some sort. You will probably get white or pink-tinted flowers from these. The third looks a bit like Trichocereus spachianus, although I'd need a closeup to be sure. Number four is Notocactus magnificus, and a nice specimen too. I'd love to see a pic of the daddy plant in the garden (hint hint!). Number five I think is Mammillaria microhelia. Photos six and seven are another Echinopsis, but again I'm unsure which one. Photo eight is a really nice clump of Rebutia... I get all confused about taxonomy here, so someone else may be better equipped to shed light on what it may be. And finally, the last one is Mammillaria vetula ssp. gracilis.

Ah thanks again Lachy

The notcactus in the photo is the Daddy, I actually just pulled him out from behind a huge clump of rose bushes (which was much fun) and he's started to shoot teeny pups off in the last two or three weeks, so I think he's enjoying the sun and soil.
The rebutia was given to me in that original pot, we have made loads of offshoots, it has really nice flowers. Happy to send you a clump!