Thank you for the welcome
This is my evidence of physiological change brought about by claiming a Shardblade. It hasn't happened yet that I remember, outside of Szeths temporary eye color change, but it seemed like common wisdom amongst the dark-eyes. It was repeated by a bridge runner later in the book, and Kaladin said it would never happen, because the light-eyes would steal the blade before a dark-eye would have a chance at claiming it.
Kaladin isn't a Shardbearer, so if he feels the Thrill, and I don't believe he does, then what is the connection between him and Dalimar, Sadeas, and Adolin? The later three aren't surgebinders, and Kaladin isn't a Shardbearer. This leaves the fact that they are all Alethi.
As I said, Shards were created to be wielded by surgebinders (Radiants). My theory is that the Thrill is a side affect of wielding a Shard without this ability. This would also explain why Szeth, a Shardbearer and surgebinder, doesn't feel the Thrill. If this is incorrect, were left with genetics again because I don't see what other common denominator Kaladin has with others who have been reported to have the Thrill.
I'm not saying I'm right, or that you're wrong, I'm just looking for additional evidence either way.