SAP is no longer certifying individual devices for Work Manager. Instead the QA team certifies OS release versions and lists what devices were used for the testing. So if your device is running a supported OS, it should work with Work Manager. As always, it is recommended to test using the actual devices to confirm correct operation.
There is an SAP note that lists the specifics of supported devices that I have to find the number of and will post as a follow up.
--Bill