He has been a big part of the 2nd, 10th, 6th, 21st, 7th, 2nd, and 3rd best defenses throughout his career respectively. Pretty big coincidence for an average at best player.
Yes, Lotulelei is a 1tech and the rest of our DTs have been in the 3techs primarily. He lines up tilted a bunch to occupy the C/G double. He can anchor whereas Jordan Phillips when he was here or Harrison Phillips currently get moved pretty easily. Lotulelei isn't asked to get upfield much because that's not really his role- they like him to take the double without losing ground and keep LBs clean. When he gets a 1v1 he can and does win.
He doesn't look like your average fireplug which is why I think people misunderstand his role a lot but he has great upper and lower body strength and his length allows him to get inside blocks. He's a good player in an underappreciated role.
I mean you can click on literally the first defensive snap of the 2019 season in this link and it shows Lotulelei taking a double lol @00:43, he get doubled on more than 50% of his snaps
https://www.bcg.com/en-us/publications/2018/how-diverse-leadership-teams-boost-innovation
https://www.mckinsey.com/business-functions/organization/our-insights/why-diversity-matters#
There is a ton of research available.
You have no concept of what you're trying to talk about. This research was done several decades ago informed by policy from all over the world: stop thinking so hard.
https://www.forbes.com/sites/forbescoachescouncil/2019/09/13/the-benefits-of-cultural-diversity-in-the-workplace/?sh=299e4bda71c0