Sometimes I will look at the keyframes from multiple clips and/or titles in my timeline. But it doing so, I do not wan't to waste the screen real-estate of having Transform, Trim, Distort, Opacity, etc. all pop open. Is the a way to view the video animation key frames (cntrol-V) but only have one or two rows pop out?

That's just how it is, all or nothing.

Is it possible to resize how they appear? Make the rows without keyframes appear thinner or change how large the opacity keyframe gets when you expand it?

What you see is what you get. Some are expandable, some are not.

Are there any that are expandable besides opacity? because that's the only one I know about

I think some effects, not sure which. But it is very rare I use that, and when I do, just to time my keyframes precisely. But I don't use that pallette much.

Yes you can change the display to a single parameter by using 'solo animation' control-option-v.

Say you only want opacity, highlight this parameter in the video animation display and press control-option-v (in the keyboard command list as 'solo animation') and voila you only see this one.

This 'soloing' persists for the clip even if you open and close the video animation display or open and close video animation display on other clip in-between.

What you can't do is select multiple clips and solo a parameter on all of them at once. You have to do it one by one.