NC:
Majority black: none. 1st is 49.6%, but has to add almost 100K population; 12th is 43.9%. So far as I know they were both above 50% at the start of the decade.
I think zendari’s 2nd try is closer to what needs to happen.
In order to get the 1st above 50% black it needs to take in some of Raleigh/Durham.
Getting the 12th above 50% black is somewhat problematic. Watt won comfortably, although everything between Charlotte and Winston-Salem voted against him.
I had thought about connecting Charlotte to Fayetteville instead. Anson County is 49% black; the 48th State House District in Hoke/Scotland is 45% black. You would need some thin strips through Union and Richmond Counties though.
You’d also have a majority white district stretching from Winston-Salem to roughly Raleigh that would favor the Democrats.
OH - Combine the Toledo/Cleveland/Youngstown seats from 5 down to 4, with 124K left over. The 14th has to use up 73K of that. The Cuyahoga portion of the 13th voted Republican.
OK - 4th (southwest) has to add almost 20K to the 2nd (east) and 3rd (northwest). It won’t cause Boren to lose.
OR - minor adjustments seem in order here among the 4 Dem seats.