Old thread but fun to hear what's going on...
I have been using KiCad and have tried Fusion360's schematic capture.
Both comparable with the industry-level stuff I used in the late 90's.
The advantage of the schematic software
versus 2D CAD* is easier moving symbols and traces around, maintaining connections, and generating a bill of materials when done.
*If one was careful with groups and blocks one could fake it in 2D CAD too.
For KiCAD I have drawn a couple simple symbols to match my solar