Please help me figure out what these hitchhikers are and if they are bad .

[Danthefishman95]

I'm new to the saltwater world and was wondering if someone can someone tell me if these are a problem? If not then they can stay but if they're bad please tell me so I can take em back to the lfs before any problems come about. The tank has only been up and running for a couple of months .
Thanks in advance!

 

[Ebone]

manjano, brittle star, and some snail..... bad, good, probably good rid of the manjano

 

[saltnewb]

last pic is a stomata snail, they're good to have. i have a bunch in my tank right now with zoa's, gsp and rhodactus mushroom.

 

[Danthefishman95]

I lost the way into my account somehow . Hahha but thanks guys!