Yoshi Sudarso (Blue Dino Charge Ranger) joked that he was made to shave for Power Rangers, it made me think which Rangers had facial hair before. Most of them being Disney Era Rangers. Most of them are Sixth or Auxiliary Rangers. RJ is the only main Ranger of the core team to have facial hair. The majority of main teams are clean shaven. Only Jack of SPD look like he just shaved his moustache or had to.
Merrick (Phillip Andrew)/Lunar Wolf Ranger of Wild Force had a goatee which does not include a moustache.
Dr. O/Tommy Oliver (Jason David Frank)/Black Dino Ranger in Dino Thunder had occasional facial hair and sometimes a goatee.
Daggeron (John Tui)/Solaris Knight in Mystic Force had a Van Dyke which includes the moustache.
Leanbow/Wolf Warrior (Chris Graham) in Mystic Force had a Van Dyke but more emphasized chin hair.
RJ/Violet Ranger (David De Latour) of Jungle Fury had facial hair, a slight Van Dyke but lighter.