Andy, dont know about a bubble of Greek Life!
The Brothers of LXA as I am sure you know are very diverse.
While being at B N Chapter at Fl. Tech. for Founders Day, I thought it being a Tech. School would be full of Nerds! Boy was I wrong!

Just a great bunch of guys! The same thing is true of the Guys I have met at 2 of the close Chapters to KC area.
In the same vein, Brother Jono, came to my F D and found the same warm feeling from another Diverse group of young men and Alums.
I have found with the young Greeks who come by my store and I talk with them, they would not be stereotyped as anything but as neat young people!
When I started my local we had so many different types taht We found it just plain normal to be that way and still are to this day!
God you should see some of the Alums who come back and say WOW you are doing what!!!!!!!!
I am sure that each Org. has the People, who like our chapter are spread from Alaska to Wash. DC. From Virginia to Wash. State. From Minn. to Texas!
Bubble ? NO WAY! Maybe while at school, but not in teh After life of working.
But in thinking of going back to My Alma Mater, and seeing the young men and the young women who they are with from differernt Soroitys, none of them really fit into a mold!
Thank God for Greek Orgs. to give learning, knowledge, leader ship skills, and many other things to help in a new life that will go with them after school!
Life, as you know I am little different, but am one of those that never met a stranger.
We and they can learn from each other!