I’ve read a lot recently that Irish butter is much better tasting, and better for you, than the American or the PUFA’s you mention.
Something to do with a higher fat content in Irish butter giving it a creamier, smoother taste.
Aside from whatever taste difference you may find with Irish butter, what makes Irish butter, like Kerry Gold (there are other brands) “good for you” is that the cows producing the milk to make the butter, are grass fed vs grain fed. There is currently a lot of talk about grass vs grain in meat, but the real difference is in the dairy products like butter - you want grass fed.
Grass fed butter is higher in a lot of fatty acids that can have health benefits - CLA (conjugated linoleic acid) being one of them.Grass-fed butter contains five times more CLA than butter from grain-fed cows. Butter from grass-fed cows is also much higher in Omega-3 fatty acids and vitamin K2, compared to butter from grain-fed cows.
Some links:
Conjugated linoleic acid content of milk from cows fed different diets
https://pubmed.ncbi.nlm.nih.gov/10531600/
Increased concentrations of omega-3 fatty acids in milk and platelet rich plasma of grass-fed cows
https://pubmed.ncbi.nlm.nih.gov/7905466/