#1 is an opuntia, prickly pear of some sort...it looks to be spineless...there's so many best of luck with a proper ID...
The good news is the care is simple and pretty universal for all opuntia...
Lots of sun, make sure it dries out between waterings...
It will never grow much in that pot, come spring find it atleast a one gallon pot and replant it in a fast draining mix.