I saw a post on here about longines conquest being a daytona homage. by that logic is the daytona (introduced 63), a speedmaster homage (introduced 57)?

After all, omega was the one to introduce the tachymeter. And speedmaster had both the chrono + tachymeter. Daytona may have changed the colors (as did longines) but the concept is the same.

and summing up, is the speedmaster thus the more iconic watch given its profile for being the first of its kind and the first to space.