Yes there can be variations, but as a general rule, this is how it works, especially for those that marry young. I serve in a married student stake and I can tell you, this is how it works. Every now and then there will be the couple that has you scratching your head, but that is very much the exception.
The good news is we have a stake full of young couples that all found each other. 1s found 1s and 10s found 10s.
I guess my point is that when people are looking for those outside their own physical level of attractiveness, they won’t have a lot of luck. That sucks but thats the way it is. The biggest problem I see is when specifically girls are an 8 or above and the entire Wasatch front is there dating pool (social media and dating apps make this a true statement), they have no desire to settle because Captain America is the next swipe away. And I guess this could be the case for some men as well.