Also need to take into account your state and whether a short term (emergency only) plan is an option. We found that to be a good choice for D after college, when she was in the process of moving states. Her plan was only $400 for 6 months with a low deductible ($500). It does require medical qualification (no ongoing health conditions) and is only allowed in certain states. But it’s good to bridge a few months if you are moving, especially as deductibles can be much lower than exchange policies if you qualify.
We used United Healthcare (which had also been the provider of her college plan). Once she had residency in her new state she switched to Medicaid (because her income is too low for an exchange policy).