some underplayed good champs?

Brand....you can basically surrender once he hits level 6.

Swain also kinda stomps, especially in lower elos.

Going off of what i see mostly in my matches this is what i see as underplayed but quite good.

Someone's going to commit FotM with this guy someday.

Also,

I haven't seen this guy in ages and I think he is a great top laner, lane bully, sustain, great tank, can deal with ranged top laners

Assuming you can execute as them properly, of course.