Comprehensive and Detailed Explanation From Exact Extract:
To combine two polled values into a single value in the web console, you need to:
Create a separate poller for each OID.
Use a transform (in the UDP tool) to add or otherwise combine the values from the two pollers into one displayed value.
Exact Extract from Official Guide:

Device Studio enables custom polling for multi-CPU and memory statistics and node details (such as chassis, serial number, and vendor-specific fields). Baselines/thresholds (A) are alert/report features, not Device Studio poller technologies. Throughput (D) is generally handled by standard interface polling, not Device Studio.
Reference:
Device Studio Admin Guide, "Technologies Supported by Device Studio,"
"Device Studio can be used for multi-CPU/memory polling and detailed node information."

Comprehensive and Detailed Explanation From Exact Extract:
Unreadable fields in SNMP traps from a device typically indicate either the device is not monitored as a node (so SolarWinds cannot fully parse its SNMP data) or the MIB file for that device is not included in the SolarWinds MIB database, making it impossible to decode certain OIDs.
Reference:
"Unreadable trap fields often result from the device not being monitored as a node or missing the relevant MIB definitions in the SolarWinds MIB database."
- (Network Performance Monitor Administrator Guide, SNMP Trap Troubleshooting section)

In SolarWinds Universal Device Poller (UDP), the column get type is used to retrieve values from a particular column of an SNMP table, meaning you get all the values for that column across multiple rows.
Reference:
" The ' Column ' get type in Universal Device Poller retrieves all values in a specified column of an SNMP table, as opposed to just a single value or an entire table. "
- (Network Performance Monitor Administrator Guide, Universal Device Poller SNMP Get Types section)