Welcome!
Just wanted to clear up any confusion. Cherry shrimp do not eat algae. They eat the food algae produces. So you'll never get rid of algae by using cherry shrimp.
Amanos, when younger, will eat hair algae, but not touch powder or algae on the glass. As they get older, they become more scavenger.
Best tool for those types of algae are ramshorns or nerites. Ramshorns will breed, Nerites won't- but will leave white sesame seeds in your tank.