HELP! multiple plant ID needed please <3

i have a small amazing looking cactus here and a houseplant that looks like an snake plant! i took leaf cuttings from the snake plant ( i think it is ) and they will revert to all green like i want when they root into new plants because that white morph does not cross over for clones ( YAY because that makes the plant stronger without the white mutation! ) but only if its the snake plant and not somthing else.... that cactus is so FUCKING AMAZING its built so beautifully and its purple on one side ! i wanna clone it but not before i know what it is! can some peoples help! the last plant looks like a damn elifants ear but its really thick

You are correct about the snake plant, aka Sansevieria. It is a chimera and does not come true to type from leaf cuttings. Commercially it is propagated by crown division.

The cactus looks like a grafted form of a slow growing mutation. Not sure what type of cactus but you can search with Google images for 'grafted cactus' and you might see an image of the plant you have.

The last is an Alocasia cultivar. Not sure exactly which one but as with the above you can use Google images to narrow it down.

Some kind of Crestata is your funky graft