Hi, I received a jade cutting that looks like yours.
The person who gave it to me called it Crassula variegata "Tricolor Jade"

Elsier

The Aloe is probably a hybrid of mixed species, of which there are many. For the second, argentea is a synonym of ovata, and I've seen the cultivar name 'Tricolor' for this Jade. I agree the third is a Senecio, which has many similar looking species. The last is Crassula; you could consider rupestris, perforata, conjuncta, hemisphaerica, as well as the cultivars 'Springtime', and 'Moonglow'. Most of the C&S sold at big box stores come from Sorensens, based in Canada, and Altmans. Below is a link of Altman's selections.

Here is a link that might be useful: Altmans library of plants

#1 Aloe
#2 variegated Carassula ovata v. oblique
#3 little guy looks like a senecio S.serpens ( smaller about 8" or S. mandrallscae (12") depending on the height. Hardy to the 20 tys.
4. Crassuls rupestris Those leaves should have color probably orange on this one. Wait until you get flowers, they should be yellow or pink, then we will know which one it is. Nothing is written in stone. If I remember coorectly that there are four forms of this species. Norma

That is pretty much the same, Crassula ovata. I have 23 with different names, you can go crazy with these. Give it strong light and it should color up well. Be stingy with water, and it will do even better. It will be a beauty when grown. Norma

Just wanted to comment on the great photos! Also want to think rjm for the link to Altmans...great photos and cultural information!

I think that Aloe is either Juvenna or Jucunda (I always confuse the two).

But I think that mix is too peaty for it, when possible, I'd unpot, add at least 30% perlite or pumice to it & replace back in the pot. I'd be careful watering this until you can make the mix faster draining (or the peat can encourage rot).

The Aloe is neither juvenna or jucunda, although it it quite possibly a hybrid involving one or both of those species. The advice about the soil mix is good, and I would also keep light levels as high as possible at this time of year.