...once youi get past the 130 BCD requirement, chainrings do come in different widths, to match up with the width of your chain. So even though almost any 130 BCD chain ring will sort of work, the wider ones for track use with wider chains probably will not. The narrower ones sold as "9 speed, 10 speed, etc) will sort of work, but not as well as something specifically designed to fit a 6-7-8 speed chain.
Additionally, as you get to more recent designs, there are custom tooth profiles and shifting ramps that improve shifting, but you don't really need them for something that old.
there are a gajillion 130BCD rings in the used parts stream, because Shimano used it as their standard for many years. If you can find a bike co-op nearby, they will have a whole box filled with them.