Didn't think about Dr. Strange. I think of him as 50-60, but the disciplines required to maintain his powers have slowed his aging so he's physically in his early 40s, although let looks a bit older.

(As an aside, I always wished somebody had written a story offering the idea that mystics take a loooong time to train, and the mystic arts retard aging. That car Strange wrecked? This idea would make it a Stutz Bearcat, and he routinely uses magic to confuse the current medical community and other record keepers about how long he's been around, and where/when they met him.)

I don't even try to put an age to the Inhumans. Their advanced eugenics and terrigenic augmentation might not make any difference, or it might mean 28-looking Crystal is closer to 90.

Luke Cage 45
Misty Knight 40
Colleen Wing 35
Ironfist 40 (again, mystic disciplines make him look younger), and he's actually 70 (Kun Lun time is different)

Captain (Danvers) Marvel: 55, but her powers de-aged her to 30

Captain Mar-Vell: no telling, but appeared 40

Tigra 35

Moondragon 60 but looks 30 (mystic disciplines)

Hellcat 35

Nighthawk 45 (serum makes him look 35)

Wonderman 70, but appears 28-30