On-demands who are classifying drivers as employees: Instacart, Shyp, Munchery. On-demands who are not: Uber, Lyft, Postmates, Doordash (not exhaustive, just the big ones that come to mind).
One thing I noticed - 2/3 of the big YC companies have gone the way of employee. If Doordash makes the switch in the coming weeks, I'll assume that YC companies are (1) getting legal advice from similar sources and (2) are more inclined to "do the right thing" (at least the right thing according to pro-labor folks...).