Lots to report, but I keep on reacting to the next thing. I was starting to think about banners and heraldry for my Bretonnians when I stumbled upon this post from Jaeckel Alone.
You can get the images from him but these two examples jumped out at me.
The articles have a few line art banners, but I couldn't seem to find any big banners like I had imagined. I think many of the ones you see around on the internet are from 4th or 5th edition army books. For Bretonnians I only found something that was labelled 5th edition. No banners, but some good tips for painting those plastic Knights of the Realm.
This sheet looks like it will be helpful in planning.
I'll follow up with this.
Thanks for looking.