Heroes that can be first pick without hesitation

PLEASE READ : This tiers-list was made in relation to team play and not especially storm league, this is why there is some heroes that can be played on Tiers 5.

Strong in the meta, they're usually picked after "God picks"
EDIT : Medivh is now Tiers 1, his power in team is insane and he must be tiers1.
EDIT : Ana is now Tiers 2, she's excellent in Storm League, but people are now used to counter her as a team.

Strong in the meta but on more specific draft and lack of something (Global, Waveclear, CC, engage [...])
Sometimes used to counter opponnents heroes
Often picked in the second rotation

Heroes that must be in a specific draft to be powerful, you pick them WITH or AGAINST certain heroes
OR
You are very confident on it and think you can carry with it on Storm League

Heroes that can be "OK" if you're good with it on Storm League but rarely as a team