Well walnut wasn't used much in the 80s, so it might depend on what sound exactly are out for and how close you wanna get. Also many things in the 80s were done on basswood guitars. (Good basswood not the crappy one used in today's cheapos). For ash vs alder it also depends on the rest of the guitar (a lot)! Pickups and hardware can overemphasis strengths and weaknesses.
Btw, I doubt that significantly more alder then swamp ash was used for recordings back then. People used often what was available in the studio or through friends and sounded good. The "analytic approach" on woods etc. wasn't that popular back then. Having said that, many guitars produced in the 80s where alder, I think more than ash. But I think even more used basswood.