Top
Irelia is one of my favorite top laners, along with pantheon. Olaf is said to be pretty strong, but I don't currently own him.
Irelia: Strong laning phase, Her kit comes with true damage and utility, she's a fairly tanky dps champion with strong engage and escape.
Pantheon: Decent laning phase, Also has utility and strong damage early with amazing tank potential mid/late game, Also has engage but not as strong as irelia.
Mid
None of the ones in your list is good for mid but I can suggest some good ones.
LeBlanc: Strong nuke damage, a lot of utility in her kit, engage and disengage as well as escape.
Lissandra: Fairly tanky ap mage, does consistent damage, has a lot of CC, can tank well mid/late game as well as do solid damage, strong laning phase, counters a lot of common mids.
Jungle
Amumu: He's a bit tougher than most for me but he's quite strong with hard CC and incredible tank potential, if played right extremely successful ganks
(From your list)
Aatrox: Strong sustain in jungle, fast clear speed, has decent CC in his kit for ganks, strong duelist mid/late game.
(From your list)
Udyr: Really for for me, good ganks, amazing clear speed and farming potential, can be played tanky or damage heavy, amazing split pusher, can put massive pressure on lanes
(From Your list)
Volibear: I don't like him personally but he is a strong jungler, has good ganks due to movement speed + flip, good clear, can put a lot of pressure on lanes.
Based on your list...
I'd say, master a couple of good champions for each lane.
Irelia is good - top
Wukong is a strong top laner but is countered easily - top
Renekton has one of the strongest early games - top
Aatrox is good - top
Udyr is pretty much invincible in his jungle and has great counter jungle and lane pressure - Jungle
Wukong has good ganks + escape and damage or tank potential - Jungle
Warwick is always a good pick jungle, has awesome gap closer - Jungle