You haven't mentioned whereabouts you are in the world, it may also make a difference to what server you choose.
Melmond does (did / not too sure on how to use tense with ffxiv) have lots of European players. Although a lot of those are currently taking a break until 1.18 arrives.
I believe that Rabanastra has lots of ZAM posters - if that is a consideration.
One word of warning is not to expect massive server populations, a lot of people either rarely log in currently or are waiting for 1.18. Also, those you do see in game will rarely talk.
Try and find an LS as quick as you can as leve linking and grouping with others is the most enjoyable aspect of this game.
In fairness, you are probably joining about the right time as most of the annoying UI niggles are fixed and we are due a decent (hopefully) patch within a few weeks.