Sunstrider Highguard

Sunstrider Highguards are blood elves located on the The Sunstrider in Bladefist Bay in Durotar when it sailed to Azuremyst Isle.

Speculation
They wear paladin armor and may be members of the Royal Guard or Blood Knights, especially since they use Blood-Tempered Ranseur. The Sin'dorei Vanguards wore similar armors and were paladins.