There's a thing in the Interface options too (I forget where) that controls how the nameplates are arranged – stacked vertically, spread out, or all overlapping. I find the 'spread' one works best for sensible-sized bunches of monsters, but it gets a bit out of control when you have 5 or more.

I only have their names showing now. Nothing else. I don't need see titles. I don't care if they're Grand Pubbah of whatever. Just whether or not I can keep them from kicking my butt. lol

That's what I mean – it shows a clickable bar that has their health, level and name on it, rather than just a non-interactive text label.

I just try to avoid anything red or skully. lol