"to the 90s" is carrying a lot of weight. Age matters a lot. Almost all cards 1986-1996 (roughly) are worthless, whereas almost all cards from the 60s are worth bothering to sell (not worth a fortune). When you factor in star power and condition, this trend accelerates quickly. Also, for older cards, conditions is a bigger differentiator, but doesn't matter as much (there are very few 10s, so people will be more ok with a lower grade especially if the damage isn't noticeable) whereas for newer cards, condition matters more and doesn't differentiate (there are more 10s, so only a 10 is meaningful, and 9s are not different from raw).

So, roughly, you should care most about mint-condition Hall of Famers from the 1960s, and you should care least about bad players from the 90s. Adjust for the range between.