I can taste the difference between brands. It’s a richness aspect imo. The same with cottage cheese. Which I’ve noticed a different taste (richness) to Walmart brand dairy depending on the production run (use by date)….
USDA does grades on these sort of things. ABC scale. Which is an interesting rabbit hole to research as the highest grade is reserved for export.
https://www.ams.usda.gov/grades-standards/dairy-official-quality-shields