@348, You can find the data attributes under customerjourneymanagement within the event section when you setup audience.
Path:
XDM ExperienceEvent-> Experience -> Customer Journey Management -> Message Deliveryfeedback -> Feedback Status
XDM ExperienceEvent -> Experience -> Customer Journey Management -> Message Execution -> Message ID
Similar thing was discussed on this community thread to create an audience to pull the profiles from customerjourneymanagement dataset.
Thanks, Sathees