I cut my hardwoods in 3 inch slabs then run them in an ad on Craigslist.
I sticker fresh cut pine on fresh cut stickers. I have not seen dried pine stickers leave anything on Red Oak slabs.
White Oak, around here are prized for trailer board. Full and nominal size 2x6s and 2x8s.
All this is for sale. For myself, I have a wide selection of odds and ends. For a specific project, I cut what I need and air dry them.
No matter what you saw, customers will ask for( or you will need) something you don't have.
My best sellers that sell themselves are full size 8 foot 1x12s and nominal size 12 foot 2x6s in SYP.
The 1x12s are used a lot by bee hive builders and the 2x6s are the most common rafter size and length. They sell like hotcakes here.
Hardwood for shelves should be thicker for planing. At least a quarter inch thicker. Cut them a foot longer than needed to cut off any cracks in the ends.
Fresh cut Red Oak laid on steel turns black almost on contact.
hugs, Brandi