moderatist
/ˈmɒdərətɪst/Definitions
1. noun
A person who advocates moderation or compromise in politics, social issues, or other matters.
“The politician was criticized for being a moderatist and compromising on key issues.”
2. noun
A person who supports a moderate approach or policy in a particular field or activity.
“The artist was labeled a moderatist for her conservative yet innovative approach to painting.”