It makes sense the ones in theground are late. The light frost won't hurt them but the warmth of the pots will speed those up. That being said I have not had a 100 percent success rate with hops rhizomes, sometimes it is try again next year.
BTW I would scrape off the wood chips and throw them in the woods where they belong.
Wood chips use up tons of nitrogen when decomposing and are a home to pests. Mulch with a thick layer of compost so that you are building up soil instead of using up nutrients. The compost will still block weeds, keep in moisture, and absorb warmth.