Not who you think is the strongest but rather your top 5 favorite to play. If you don’t have 5 in a particular role, just name what you have. Given all the tribalism in the forums, I’m curious about everyone’s lists. I wonder how many are surprisingly diverse. Mine:
TANK
JQ
D.Va
Doom
Ball
Orisa
DPS
Tracer
Sombra
Sojourn
Mei
Bastion
SUPPORT
Illari
Bap
Ana
Zen
Brig
I think some people will be surprised by my answers… but judging strictly by playtime…
Tank:
DPS:
Support:
I like many different playstyles 
No central theme as far as I can tell
i have a refined taste
hammond
winston
zarya
dva
doom
tracer
torb
sym
the rest are boring
lucio
kiriko
zen
moira
bap
Tank:
Ball (most fun hero in the game imo)
Junkerqueen
Winston
DVA
Hog
DPS:
Junkrat (my love)
Genji
Echo
Hanzo
Torb
Support:
Lucio (second favorite hero in the game to play)
Ana
Zen
Illari
Kiriko
Tank:
Monkey
Ball
Sig
Rein
JQ
(lately I’ve played a lot more doom/Dva than Monkey/Ball because of how much better they’ve been for a while now, but monkey/ball are a lot more fun)
DPS
Sombra
Tracer
Echo
Ashe
Mei
Support
Zen
Lucio
The rest are boring, I don’t play support
I like the fun element
Tank:
Sigma
Winston
Dva
Zarya
JQ or Mauga (TBD)
DPS:
Tracer
Echo/Ashe
Sojourn
Genji? Im kind of a four-trick-pony lol
Support:
Bap
Zen
Kiriko
Brig
Illiari
My list would be a little different if it was based on skill not fun tbh
Dva
Dva
Dva
Dva
Dva
Dva
Dva
You already knew this
For tank its hard but if i had to play tank it would go
Rein
Sigma
Hog
Queen
Dva
For dps this is even harder
Genji
Sombra
Bastion
Rat
Echo
And support easy
Lucio
Brig
Weaver
Zen
Bap
Tank:
-Dva
-Rein
-Winston
-Orisa
-Ram
Damage:
-Reaper
-Soldier 76
-Torb
-Echo
-Cassidy
Support:
-Moira
-Ana
-Zen
-Lucio
-Mercy
Tank 
-
DPS 
-
Support 
-
Tank
Rein
Dva
Orissa
Damage
Widow
Sombra
Ashe
Pharah
Support
Moira
Mercy
Ana
With damage and support I’m more willing to try different heroes but tank it’s just those three
Hog
Mauga
Soldier
… Reaper
Um???
Those are the heroes I have the most fun with. I am just letting Reaper slide because he is my dark prince. Fun might be an exaggeration.
Your support choice is Zen!
He is indeed. I am just not sure if it is because he is fun or because it is the only support I can play. 
D.Va
Orisa
Queen
Zarya
Sig
Echo
Soj
Symm
Junkrat
Tracer
(I could probably put almost any DPS here besides like maybe Genji, he gives me the same guilt as Lucio)
Mercy
Brig
Zen
Kiri
Moira
I didn’t play Mauga’s trial week, genuinely excited to try him soon! I feel like I’ll like him. Too bad I don’t willingly play Tank anymore. I’d probably be more hyped if I did.
What happens if Dmon becomes a hero someday?
(hopefully)
Soldier
Mei
Sojourn
Hanzo
Sombra
Orisa
Sigma
Ram
Zarya
Hog
Bap
Moira
Ana
Kiri
Illari
My list would change depending on the meta, playing a hero bad into the meta isnt too fun.
Tank:
Zarya
D. Va
Winston
Orisa
Sigma
DPS:
Sombra
Soujorn
Junk
Mei
Pharah
Support:
Moira
Illari
Ana
Zen
Lifeweaver
what if you dont have 5 though in each role
Tank:
(all I pretty much play)
DPS:
Support:
(I don’t play support often)