If rot, stem is usually quite soft. I can't tell from pic if yes or no. If stems are rotting, plants are usually beheaded.

One of the plants in pic 2 is etiolating; but maybe even top right plant is starting to (again, just looking at the photo). I keep succulents in lots of sun, but let rootless ones to establish before putting into good sun.

BTW, I am surprised that you consider 20*C 'fairly warm' - I am also in Canada, in colder zone than yours, and temps have been lately in thirties...right now is 32*C (still raising); yesterday high was 35*C, same past few days. Rest of the week is expected same. And humidex values are in very high 30-ties and up to 45*C...

I would consider 20*C more than comfortable; and if plants have started to grow roots, keep them in at least morning sun.

Oh rina thank you for replying!

The stem is firm so I guess no root rot then? Also yeah 2 of the 3 pups are stretched, so I’ll try to find a good place for them outside.

Oh wow its hot there! I live near the coast (BC) so the temp here is usually 20s and low 30s (in the spring/summer). It was 34*C a few weeks back in spring but it lasted one day and then the next day it was 22*C and raining aha. The average temp right now is 24*C

Ah, you live somewhat near me, I'm outside Seattle. You have too many roots to have rot. Usually you will have none.