Which weight classes have a 'good balance' of contestants.
I only looked at two weight classes closely so far after this idea occured to me.
I'd say D3-106, D1-160 and D2-138 each have pretty good 'balance' to the placement of competitors, considering records.
Take a look at brackets in all three divisions and find your three picks, either one from each division or any three.
at this stage of the contest its all good competition so your question is not a good one
D-2 106, D-2 126, D-2 182. These brackets seem to have great talent on both sides.
D 1 138lb bracket seems to have a fair distribution of wrestlers based on past performance.