Literally all of these plans are just modified versions of the Patient CARE Act that was put out by Senators Coburn, Orrin, Hatch, and Burr in 2014 and 2015.
And the best part? The Patient Care Act is literally Obamacare with a few tweaks, which in turn is based off Romneycare, which took its inspiration from the Health Equity and Access Reform Today Act from 1993 (Yes, that spells "HEART Act").
It's hilarious watching the GOP establishment twist themselves into knots trying to propose an alternative to Obamacare (which is basically their plan), by simply giving it a cosmetic makeover and furiously denying it's just Obamacare from a Republican perspective.
The GOP establishment has effectively surrendered policy-wise on Obamacare. It's just rhetoric now.
Their plan is basically 'ObamaCare without mandates', done through tax credits rather than subsidies.
I don't like the individual mandate either, but it's a necessity to making the law work.