Goku IMO is pure IEE. Some might assume him to be Se base because he is a fighter looking for challenges but his general demeanor is more of an IEEs. He is too light-hearted for SEE. He also shows his Si-seeking quite blatantly, remember how much he loves it when Chi-Chi makes him food?

Piccolo is strict, disciplined and introverted. This becomes especially clear when he trains gohan. Textbook LSI-Se.

Vegeta is SLE-Ti. He may seem IJ-ish but that actually fits with SLEs as their holographic panoramic cognitive style can make them seem that way. Compare him to piccolo and the p/j difference becomes obvious.

Frieza is an EIE gone bad. Very pronounced Se-HA.

Yamcha is also EIE but not as fucked up as Frieza is.

Roshi is a pervy Fi polr ILE-Ne.

Cell is ILE-Ti. Likes to play around with his opponents in creative ways.

Tien SLI probably.

That's all I got for now.