Look, if you've shut off hop pellets (which are just cones that are shredded, mixed and compressed into a more homogenous, easy to ship, handle, test and use form (the only thing pellets are harder to handle is filtering from your finished beer)) you've turned your list from most breweries to very very few. Certain ones will do whole-hop brews as special occasions, especially wet-hop / fresh hop beers around harvest time, but very few will use exclusively whole cones in all beers. Like others, I think you may be ignoring the forest for the tree. Using pellets doesn't mean they don't care about what they're making. I would recommend visiting some breweries nearby. Talk to the folks there, and see if they can assuage your concerns about ingredients. Like I said earlier, most craft breweries use only the 4 main ingredients, malted barley, hops, water, and yeast in the majority of their beers. Certain beers might get other items, like oats or lactose for stouts, fruit or other flavors for others, and weirder experimental beers. Using your example earlier, no brewer would use Froot Loops in a beer without advertising the hell out of it - being something that one would never expect in beer they won't just sneak it in.