It honestly was an interesting bit of research, once I sifted through the bickering to find that comment. You just have to look outside of "white groups" when thinking about it and dig deeper into the actual culture of each race, and not be so one-track-minded. Everyone has their fair representation.
Group 2 is a college club and one of the most beloved on campus. What does European have to do with anything? Persians are white. The others rent out buildings to gather for meetings and activities.
I literally spent 5 minutes typing in "persian/irish/scottish/swedish culture groups", and posted the top google search, bro. It's not that hard. Don't try to disregard the actual facts given to you by hand waving them with assumptions.