What server to pick
All of the top NA servers have a general English speaking group.
If you’re playing on an American server then it shouldn’t a problem, English is the official language on all of them and as far as I’ve heard on the forum there are none where another language is most common (although there are groups of players who speak other languages).
If you’re looking at European servers you’ll definitely want to avoid any with a tag after their name, like [DE] or [FR] because those are official non-English servers. I know Desolation and Gandara are predominantly UK and therefore English-speaking servers but I’m not sure about the others.
“Life’s a journey, not a destination.”
Use the link Radee gave—-you can see the rankings,avoid the bottom ones—- (I’m on ET and being in the bottom 3 all the time is no fun for WvW and world completion is next to impossible). NA will be english.
I wouldn’t say it’s next to impossible, Blude. After all, we now have random BL/colour access. Not to mention, as for fun: do you really think us(FC)/your guys(ET)/AR wouldn’t be hella fun?
As for the OP’s question: Another of the EU ones that I know sticks with English (since my last Guild swapped over recently …) is Ruins of Surmia. In the end, though, you’re going to be best with whatever server fits your planned playstyle. Also keep in mind, that if you’re planning WvW as a major time-eater, it’s arguable you may wish to keep away from NA Tier 1. A lot of complaints have been made, RE: zerg/skill lag, queue times.
Other 80s: Any but Warrior