Thanks for sharing your collecting interest!
These types of minor error varieties don't attract much attention in the NCLT world - the lack of discussion here points to that fact. A few major errors have fared a bit better - missing edge lettering on the Calgary Olympics $20 silver coins, for example. But, overall, these error coins don't appear to have the same strong following as do their circulation counterparts.
I wish you the best with your pursuits!
Collecting history one coin or medal at a time! (c) commems. All rights reserved.