I mean sure, butter can sit at room temp and such; but the store isn’t legally allowed to do that. If those products are kept out of refrigeration for 30 minutes or more, they have to be thrown out. The only shelf stable dairy products you’ll find in this state not kept cold is powdered milk and freeze dried cheese. Or custards and shit like pudding, if those even count as dairy (eggs are considered dairy here).
Sour cream I would think could be kept room temp. Isn’t that how it’s made in the first place? Just leaving cream out to go bad?