number 1 is a torch and depending on your lights it can be placed high or low. I have mine in the sand but my lights are strong. They like like, i keep medium flow on mine. If you search my name in the LPS section you will see mine on ground with a hammer which is the same family coral.
number 2 looks like an acan... I have 1 but it looks like it was receding, i had it on the floor and i have moved it up much higher since. It has stopped receding but it is not coming back yet.
The rest i cannot tell by the pictures and my in-expertise