All stealth 5 man team

[nodoze]

/follow works fine in open world PvP in classic (in current BfA retail /follow stops when your in combat with another player and for around 10 second after - but you can still IWT spam melee based toons etc).

/follow does not work in Battlegrounds and so they are very difficult to box in.

(Of note, 'm sure /follow did work in BG's in 1.12!).

A melee group should work in World PVP for at least classic Launch. If I recall correctly follow did work in BGs until well after 1.12 (I remember getting focused fired by a Shaman group in AV). Even if they later break /follow when combat starts with another player an all stealth group should at least be able to have some epic ganks as you can control when you start combat easier. You would have /follow while in stealth setting up for the gank and then IWT until everything is down.

That being said I think parties made up of mainly Shamans are the least risky combo for World PVP between being fairly armored/tanky and having both Chain Lighting and Chain heals... Locks are also pretty tanky & have fears and can do lots of damage on multiple enemies (assuming all their dots stack). Both party compositions wouldn't need to move as much for survivabiliy as some other combos. Unfortunately neither are much of an option for me as both my brother as I like to main a Paladin and he likes to main a melee (in Vanilla he mainly played Retribution Paladin with some Prot mixed in).