Another great post there TRAINWRECK. I’m usually the one who touts the “less is more” approach. Your post shows why!
I shoot a lot of weddings and for 90% of the shots I use on camera flash. They may not be the best lit wedding pictures of all time. But I can reliably get good lighting EVERY time.
I don’t have a favoured set up, I find ceiling bounce looks great one week and looks awful the next. But as you’ve explained, there are several combinations to try and I always get one that works well.
Even direct flash works fine for fill flash, outdoors on a dull day.
Broad side and Short side, were taught to me as Fat and Thin. As fat people tend to look thinner when lit with Thin ( Short) lighting.