I have a maintenance and construction background. For that reason, I always run lights and recetps on separate circuits and home run them to the panel. It makes troubleshooting much easier for two reasons 1) hard to see to troubleshoot when the lights are off 2) hard to troubleshoot with stay power on the neutral leg off lighting circuits. I know it’s also preferable to keep electronics on their own circuit without sharing a neutral with lighting curcuits, but I don’t recall why and I’m too busy to break out the hand book.

Some 14 gauge is rated for 20 amps in air (not in conduit), but again, too busy to research. I think it’s THHN copper - solid.