As far as I know, tricolor, lemon and lime, and variegata all refer to the same plant.

'Tricolor' is the odd one out in this group, since it has oblique leaves.

The other Jades mentioned are most likely slightly different clones of C. ovata variegata. Examine their variegation, how and where it occurs on the leaf, and you should be able to draw a conclusion.

That said, there are at least two very distinct variegated Jades - one is commonly called Lutea, and the other Alba (which is much whiter).

Post pictures if you'd like a second opinion.

Josh

Tough to discuss this w/out pix, leads to guesswork at best.

Here are a few variegated jades...

I see the term "oblique leaves" often, just what does this mean on a Jade?

Here are my young starts.

Tricolor

Lemon & Lime

This is from a plant sold as"Akia"

C. ovata variegata

Unknown but I think it is variegata.

I'm pretty sure it's a Carssula but not sure if it's ovata, Thick fleshy stem but the leaves are thin. It's in the process of rooting and I'm going to wait and see. Not like any Hoya I grow, but that doesn't mean much. I was thinking the strange leaves was from not being able to take up moisture. It's in a 4" pot.

Definitely not Crassula ovata, the stem is all wrong for that (C ovata's stem would be darker w/ clearly discernible segments btwn nodes).

Have any leaves broken off & does it bleed white sap?

I doubt it's any kind of Crassula, really, the leaves are wrong as is the stem.

These leaves do not appear to have any trouble taking up moisture, they look healthy & well hydrated. I don't know what you think you're seeing to say that.

It looks like Aptenia cordifolia variegata to me - but I can't tell the size?

I have only 1 hoya, but stem doesn't look right to me to be hoya?

I think you are correct rina, a heartleaf ice plant.

Three weeks ago this plant had shriveled leaves, did not look good. I increased water and it has made a good comeback.

This start came from my local gardening club in a baggie of Jade starts so I started off thinking it was a type of Jade. My bad.

Steven, np. They look somehow similar. And when it blooms, you can tell for sure. Aptenias have quite nice flowers. It was probably a hijacker with other jades :)

Steven,
your plants look to be properly identified now, except for the last Jade, which is also a 'Tricolor' but with a more white color to the leaves. The 'Lemon and Lime' and the 'Akai' will probably appear very similar after growing for a while in your home conditions. As for the descriptor 'oblique,' or obliqua, I've always taken it in reference to the pointed tip of the leaf, as opposed to the rounded leaf of C. ovata.

Palmbob, nice Jade shots. That brilliant golden Jade in bloom is probably a 'Hummel's Sunset,' judging by the residual pattern on the leaves. And the last Jade, with the variegated sport, is the straight green form of C. ovata obliqua.

Just for comparison, here's the more white variegate, 'Alba,' beside the more yellow variegate, 'Lutea.' I'm not actually sure that these names/naming conventions are recognized, but a few of us Jade enthusiasts are using the names as placeholders for the time being.