Sewing Method, Final choice of topstitch for finishing fleece seams.
After several days, and about 10 hours of try and experimenting with different stitches, I have decided that on my machine, an inexpensive Walmart Brother Project Runway CE1100 (bought on sale for about $100).
The best choice is stitch number 52, with a stitch length of 2mm and width of 7mm, using a basic cone thread 100% poly.
Every machine make and model is different you may get similar results using similar stitch and setting, but likely will have to tweak them a bit for best results with your machine.
My plans are for making some stylish upscale hoddies for gifts in 2019. not going to be making them for sale. I live here in Florida a lightweight jacket is always handy. For a few months in the winter, hehe
The final tweak was to do the construction seam with a scant 1/4″ or 5mm seam allowance. Using this when I topstitch with the number 52 as 7mm wide, the entire seam allowance gets captured and enclosed in the stitching. leaving a nice inside and a great outside.