Well, looks like either a small minimaxi anemone or a disfigured hairy mushroom.
There is a lot of growth on your live rock, but most of the pictures aren't showing anything and hard to see.
The 'worm' could be a peanut worm.
Then in the last picture looks like some sponge and a lps
coral...can't tell if there is any tissue left in there or not. Could be anything from a frogspawn to a duncan if is even alive.