King of the Elves

[Voralphion]

elrond i think
would rightfully have the title of high king of all the elves, beening he was the steward
of Gil -Galad,

True, also he was the eldest descendent of Fingolfin, high king of the Noldor, (Fingolfin-->Turgon-->Idril-->Earendil-->Elrond). Since Gil Galad had no children, then the kingship should've gone to Elrond, although he didn't take it up.

In UT it says that Celeborn and Galadriel weren't king and queen of Lorien because the elves of Lorien didn't want to take a new king after their original king, Amroth died.