Whoa this board is waaay more complex than I figured--I have simple Q!
I assume you're asking if Corona and Heineken are available as 3.2% abw versions in those states (there are only a handful left, mostly in the mid-West and Mountain West) that still limit the alcohol to rate for certain licensees, etc?
I seem to recall that there is (or was) a Corona 3.2 but don't know about Heineken. I imagine that Heineken's market is the 3.2 states isn't very large (it's always been a mostly urban/suburban/coastal beer) and it might not be worth the effort. Corona would more likely want to market their beer in those states.
Note that 3.2% abw is equal to 4% abv (the increasingly more common alcohol rating method for beer in the US now- abw, thankfully, seemingly dying out except in those same 3.2 states). The "6%" beer is something of a myth, most US "macro" beer is under 6%, and is in the 4-5% abv range. The "6%" figure came from state tax and other alcohol beverages laws that used to state that "beer *between* 3.2 and 6" was regulated/taxed differently, and retailers played up the higher figure of the limit.
mostly no, corona is 4.6 ABV and Heineken is 5 abv. I understand you can get a 4.6 Heineken in Ireland. Neither is particularly noteworthy, other than because of their bottles (clear and green), they can skunk when exposed to light. Other than skunkiness, neither is very memorable, and you can find better beer in most places. Like the Big 3 American beermakers, they assume that their market prefers tasteless, bland beers, which may suffice on a hot day as a thirst quencher. But so do water and Gatorade. Crap beer is ubiquitous, but you might have to hunt for good beer. Sorry for the rant, I realize it goes beyond answering your question.