Scarlets--not likely
blue legs--most likely
hawaiian--not familiar with
Make sure you have plenty of empty shells for them to move into before you buy more snails. Hermits grow and need bigger shells and will take a snail shell if no other is supplied. You can ask the LFS for some, but also go to a craft store, buy a bag of shells, boil them, and add to the tank. Make a pile of empty shells and hopefully that will work. I stay clawless here---learned my lesson.