Both of them are beautiful, and very happy to be offsetting so well. I don't know what you've got at first look, but we'll work on it. Cacti are classified at the genus level mostly by their blooms, although there are other clues for identification. Both could be rebutias or mammilarias (or something else) so let me ask you some questions. How large are the heads and at what age did they start to offset (rebutias are small and cluster and
flower at a much younger age than most others)? Has #1 ever bloomed? If so, where did the
flowers come from (the growth point[not rebutia or mam], part way down in a not necessarilly complete circle [mam!], from the bottom [rebutia], was the
flower right up close to the
plant or did it have a stalk (if a stalk, was it smooth or spiny?). The same questions for #2, except I can see 1
flower in probably last year's new growth. This makes me think mam except I only see 1
flower and they generally put out multiples (but not, darn them, always).
Anyway, you've got BEAUTIFUL
plants! Don't change anything you're doing! And happy Summer Solstice!!!