It is not clear which variety of Cotyledon orbiculata it is derived from, but its cultivar name is 'White Sprite'. It is not a Crassula.

Yes, Portulacaria afra & a variegated one (Elephant Bush)
Could be Aloe vera v. chinensis
Yes, Kalanchoe marmorata
Cotyledon 'White Sprite'

Echeveria 'Perle von Nurnberg'
Faucaria, maybe F. felina or tigrina
Haworthia fasciata
Aptenia cordifolia f. variegata

Looks like an Aloe ciliata hybrid.

1st post, plants 1. & 2. Echeveria 'Perle von Nurnberg' & Sedum clavatum (yes, watered too much).

Jameson, (original pic/poster), I believe yours is Echeveria secunda.

Looks like Crassula 'Springtime' to me.

Could be an etiolated Haworthia. Would need to see it as it grows, hopefully more compactly...to give you a species name.

Oh GEE! I was looking through the pix, making mental notes to myself on names to make a comment. THEN...I see this is a year old post & I already commented! At least all the names I was going to give are the same as I said a year ago! Whew!

Just as a note...Aloe aculeata has a characteristic of white/light colored nipples around each tooth/spine (called tuberculate spines). Aloe peglarae is a different Aloe, although similar (when not in flower).

1. May be an xGraptosedum 'Ghosty'...but you'll need blooms to confirm.
2. Kalanchoe millotii
3. perhaps xGraptosedum 'Francesco Baldi' (but it doesn't look quite right).

I agree with Saxicola's IDs. Second one may be an xSedeveria, but hard to say. Blooms may help you get an ID.

Same here...it's an Aloe, but not sure on species. Look into reitzii.

Looks like a type of (variety of) Haworthia attenuata.

Yes, Haworthia limifolia var. limifolia.