You could start by taking a look at what the OneView system is polling. Look under OneView-Administration->Diagnostics change the 'Level:Basic' to 'Level:Diagnostics'. In the left-hand pane select Historical Statistic Collector->Statistics / Statistic Collection Targets.
That's going to give you a good idea as to what OIDs are being polled. You'll end up (depending on what you're actually trying to trend) in iso.org.dod.internet.mgmt.mib-2.interfaces 184.108.40.206.2.1.2 and iso.org.dod.internet.private.enterprises.siemens.hiPathWireless 220.127.116.11.4.1.4329.15.
If you're going to use Cacti you can probably find some templates floating around.