How many series are the skins of all heroes in the glory of the king?

In the game the glory of the king, the skins of all heroes are mainly divided into the following series:

Brave skin: this is the lowest skin, usually only changing the hero's appearance, without extra special effects or sounds.

Exclusive skin: This kind of skin is usually designed for a specific hero, which has a unique appearance and special effects, but it still belongs to a lower level.

Epic skin: Epic skin is a higher-level skin than the exclusive skin of the brave, usually with better appearance and special effects, as well as unique sounds and animations.

Epic limited skin: this kind of skin is epic skin, but it only exists at certain times or activities.

Legendary skin: Legendary skin is one of the highest grades of skin, which usually has a unique appearance, special effects, voice and animation, and can only be obtained through purchase.

Legendary skin: this kind of skin is legendary skin, but it only exists at certain times or activities.

Glory collection skin: this is the highest grade skin, which usually requires a lot of money or points to obtain. Glory collection skin usually has a very unique appearance, special effects, voice and animation, which can change the hero's appearance and skill effect.

In addition to the above series, there are also special types of skin, such as war-limited skin, world crown skin, anniversary-limited skin, couple skin and dream-level skin.