Guild Wars 2

Now that I have 6 level 80 characters, I am considering giving them specific roles while I level up my reaming 3.
I have a Guardian, Thief, Warrior, Necromancer, Ranger, and a Mesmer that does everything right now.

So to save on gearing them all with multiple sets of equipment, (or until I can afford otherwise), I am looking for some suggestions on how to dispatch them into gameplay other than PVE. Dungeons and Fractals that I have yet to try, as well as WVW and PVP that I am slightly more familiar with.

For dungeon/fractal I would suggest the guardian and mesmer for some specific paths.
For WvW if you think in roaming, thief and rangers are really good, but I suggest going with your warrior, it is more flexible between zerg and roam, but the build is usually different between them.
For PvP rangers and mesmers are good (I personally like guardian a lot but they are stronger in dungeons), I’m not experienced with thieves in pvp so I can’t make an opinion in that aspect.
I didn’t mention necro in any part because they are in an “ok” spot in all game aspects, except for dungeons, there necros are just bad.