I've got the wind Magical Archer, and she was pretty good early on, but has fallen off a bit lately. Granted, she's not awakened, max level or runed quite as well as my go-to creatures, but while she does pretty good damage at times, it seems like she's pretty fragile. Doing all those 3 things to her will obviously help that some, particularly if I get some decent sub-stats on runes, but it seems like she's still a glass cannon build for the most part.
I have a Light Amazon that is rated well, but honestly I haven't done anything but level her on the double xp times so can't really give a good review. I know she has a decent little stun attack, but I couldn't even tell you how often it is usable. According to the rankings she's tied with Dark Amazon for best, but why that is, dunno.
Never used Bounty Hunters or Grim Reapers for anything but fodder.
By the way, that Reddit page on this game has a Daily Monster Discussion where they comment on all the different flavors of a particular monster, and while not always helpful, it can be. They also have a convenient list at the top now that links to previous discussions. Pretty sure the Magical Archer and Amazon have been discussed, maybe the others too.