Where can I find a complete list of all heroes (rarity + availability)?

[Karin]

All art was created around 2013-14, so reused. The class is the same and usually the affinity. The rarity has often changed. There used to be common, Uncommon, Rare, Epic, then the first legendaries were only 3* and there wasn't even mythics in the game at first and when they came, it was as 2*.