A V1910-24G isn't a Procurve, so off-topic for this forum ;)
More to the point, the private MIBs (1.3.6.1.4.1 etc) are nothing like a Procurve's. BTW you didn't include those in the text: snmpwalk didn't get the whole tree for some reason.
Anyway, these are essentially rebadged 3Com gear, so you would be best looking at how to get the CPU usage off a 3com. Unfortunately, it's probably chopped off the 3com MIB tree and pasted under enterprises.H3C 1.3.6.1.4.1.25506 somewhere.
So, I would suggest you find whatever works on a 3com baseline 2928, and match right to left on a snmpwalk dump from 1.3.6.1.4.1 . Failing that you can download the MIBs from the HP site and trawl through them, although that's probably more like hard work.