Yes Ray, the 10 is 10% ethanol, usually called E10, the E20 is 20% ethanol, and E85 is a wopping 85% ethanol.
As far as I am aware there are no motorcycles that are designed to run on E20 and certainly not on E85.
I have no worries about putting E10 in my FJR1300A, my BMW 650GS, and ocassionally also in my old carburettor equipped Yamaha 250Raid.
Also our Nouvo Elegance has only run on gasohol E10. None of these machines have shown any performance difference or any ill effects from E10. I am keeping a careful eye on the 250Raid, to see if it is affected, but no problem yet.
The gasohol name, (gasoline with alcohol) was first given to represent the E10 blend and really should only be used for that, but some people and garages are using the gasohol name for all the blends, 10, 20 and 85.
In summary I am happy to use E10 and save money,with no obvious disadvantages, but I would not put E20 or E85 in any of my bikes or in my car.
Some car manufacturers are listing their newer models as OK with E20.