Each is singular. It talks about one person or thing.
Once not one time. Twice not two times.
When using one of use the plural of the noun.
Use other for plural nouns and another for singular nouns.
People is the plural of person.
In comparative sentences we use a singular noun after any other.
When we compare two people or things we use of, not from.
When a group has just two members, we use the comparative not the superlative.
A noun can only have one comparative.