Finasteride and dutasteride will almost esclusively only work on testosterone, and you should use dutasteride preferably since it's more effective. Other than testosterone you should only do steroids with low androgenic effects. As a general rule you should avoid oral steroids because they are more likely DHT derivatives. Anavar is oral and not ideal if you have male pattern baldness, but its not the worst steroid.
Turinabol, deca and boldenone (eq) is more hair friendly. Deca should not be combined with dutasteride because it becomes more androgenic. Boldenone is probably better since it's already low androgenic, and the main reason for its androgenic effects is because of its metabolite which is converted through 5-ar.