Help! What are all these houseplants?

[Rubyyeats]

I recently purchased a home and the previous owner was a mad keen gardener. She left lots of houseplants behind, and they’re currently sitting outside until I figure out what to do with them.

I’d like to know what they all are so I can figure out 1) what I want to keep and 2) how to care for them!

Any suggestions welcomed. Thanks

 

[Twigs]

Quick answer for:
1) Desert Rose
3) Jade
6) Umbrella plant
8) looks like an Amaryllis
12) Arrowhead plant

 

[SeniorCitizen]

2) Lemon Plant - species of citrus fruits
4) Sheep Laurel

this info. is according to my pic app.

 

[cpp gardener]

1) Agree
2) Citrus maybe not lemon, smell a crushed leaf
3) Agree
4) ?
5) Syngonium
6) Agree
7) Ficus microcarpa nitida
8) Amaryllis
9) Syzygium - species not sure, maybe jambos
10) Syngonium again
11) Cordyline fruticosa - Ti plant
12) Syngonium - again