Hello Dave,
The big disadvantage of SNMP is even that the protocol is standardized the content is not. Most devices have vendor specific information in the private MIB and requesting and individual development in monitoring tools. You can have a look in setup - Catalog of check plugins what is available out of the box or look at https://exchange.checkmk.com/ if one already developed something.
If still nothing found you may develop your own solution:
regards
Michael