I more meant the layers of their concentric orbits as distanced from their center (the Sun or the Earth). Considering how quickly Mercury orbits the Sun while being the closest planet to it, it makes sense it’d be at perigee more frequently and with less variable distance than other planets that have a wider orbit.
To quote ancient words of wisdom: “Everybody’s sayin’ that the Scatman stutters but doesn’t ever stutter when he sings. But what you don’t know, I’m gonna tell you right now that the stutter and the scat is the same thing, yo, I’m the Scatman.”