Dustwallow marsh murlocks on the east coast.
Very fast respawn and tightly packed mobs. You’ll also be fighting for those mobs if any mages are out there trying to aoe farm.
If gold is your main concern, you could go to Arathi Highlands and kill the farmers. They respawn pretty fast and it would be less dangerous at lvl 35
If you’re feeling strong, you could kill the elementals that drop the charms needed for the whirlwind axe 
Those usually sell pretty well but I believe they are level 38-41
I got my mount money on my warrior and priest killing elementals in arathi highlands. They drop these items that warriors need for their WW axe.
Not sure how well they selling right now but thats how i did it on era.
If you had skinning I’d say the jaguars in SoS.
They do drop some nice vendor trash but not sure how good it compares without skinning.
Make silk bandages and vender them, quest, only train the minimum of skills, don’t AH every green, some are better to vender due to overflowing amount of them posted.
I should have made screenshots of all the angy, foul-mouthed whispers I got on Bloodsail from some fragile folk while aoe grinding a couple of the murloc camps. It would have easily rivaled the salt from Terry’s visits.
But it is a great area for grinding.