wow, that’s quite a bed but I wouldn’t call it contemporary, would you?

I don’t have any specific suggestions (haven’t been shopping for bedroom furniture in years) but I agree that you don’t need to buy everything to match. But IMO since the bedroom is intended to be a restful place, I’d probably buy matching nightstands. I also learned that it’s best to have the nightstand be the height of the mattress. My nightstands are a bit lower and next time I’ll do it differently.

Well, that bed is far from contemporary. Not even sure it's transitional, it's pretty firmly traditional. How big is your bedroom? This bed is going to dominate the space, so I suggest going for lighter and brighter side tables and dressers.