This information is available in the ePO database, but it's not a straightforward list of event id + description.
Otherwise there's a list via the ePO console's Event Filter configuration, but that would not be easily extractable.
Also, it's going to depend on your server's mix of available managed products. So the list depends on what you have checked in too.
I'd suggest you open a support call to discuss it further.
Thanks. Have logged an info request SR.