Guild Wars 2

So far I have a ranger, thief, warrior, and necro what class should I make next that fits that description?

Hey I’m just trying to get a good power build for my necro with Staff and Axe/focus, my utility skills are blood fiend, blood is power, spectral walk and spectral armor (to gain life force) and flesh golem

My stats are
30 II/VIII/VII
0
10 V
0
30 II/VIII/III

I’m a total noob and any help is appreciated:) the only thing I don’t wanna change are my weapons I’m so comfortable with them but if I really must then I will