Running report for Marketo "Activity Type"

Hello,

Is there a way to run a report on a Marketo activity type. I see a "activity was logged" filter but it pertains to Salesforce and not Marketo

The reason why I'm asking is that we've had a bunch of leads not syncing back to SFDC lately due to a new configuration we've set up. The only problem is, I don't know exactly how many leads are being affected by this.

Example screenshot of what I would like to run a report on:

Ideally I'd want to run a report on the detail so that it's more specific, so anyone who has the above Detail listed.

Any way to do that? Thanks!