2) a zoa or a palythoa. To me it looks like a captain jerk paly. A nice green under blue and that same cinnamon under brown. (Don’t take my word on it) it’s a great beginner coral that grows fast and does well in a lot of water parameters
3) green or purple Kenya tree. A great beginner leather coral
2nd one is Zoanthus cf gigantus, not Palythoa. Thick tentacles and smooth mesoglea means it's not Palythoa. The green stoma and striations on the column/captitulum means it's like Z. gigantus