We have unofficially use tags for decks.
Something like:
[AI3] = for grinding Elder
[FG] = for grinding, what else? False Gods.
[Arena] = generally Bronze or Silver.
[Bronze] [Silver] [Gold] [Plat] = for specific Arena league.
[PvP] = either PvP1 or 2, depending on upped or not.
[fun] = more of a novelty deck than effective.
[*element name*] = could be duo, trio, or quartet depending on the number of element tags. Some people use "Other" too, even though there are only 12 elements (i blame shards for this)
Usually deck with tags like this attracts more commenters because it's easier to know what's this deck about.
EDIT: or just use the tag to define your combo. Example: [LS/TU], [Voodoo/Overdrive], etcetera.