Traditionally I always thought that leagues are primarily determined by looks. Face only, assuming no extremes in terms of height or body. Then personality and demeanor and social status has a small amplifier on that, but very small. Socioeconomic status I do not think has any effect on one's league. However people still date within their socioeconomic class because natural chemistry is far more likely that way. Obviously this is all for the initial meeting/first & second date stage.

Social status is a huge one that people misunderstand when it comes to this since it can change elevate your league to some degree. But it only does so if you're in a niche or an actual celebrity or professional athlete. Niches only apply to the small number of women who are into that specific niche, so for almost everyone else, that guy is still average Joe. For almost all men, it's not applicable.

I also think some people misunderstand social status and money because they think being a firm partner making 275k is comparable to an NFL running back. They also don't realize that in the case of pro athletes, the guys are generally very tall, very athletic looking (obviously) and quite often above average in looks anyway.

I think in the old days, dating in your own league was not overly difficult. What's changed now is that it is actually more difficult to date even at your own level. Obviously it still happens a lot, but what used to be a little more simple is much more challenging. Going above your league is almost impossible unless you're paying or have a very specific niche.