I mean really, why aren't the others written about as much as the Constructicons or the Stunitcons, 'cause they're not good looking or something?

I think it has to do with when they were introduced. I don't know when the Seacons came in, but the Predacons and Technobots are both season 3 characters, and if there's one thing I know about this fandom, a lot of people dislike season 3 of G1 animated.