I don't specifically recall that our NRTL (used for 60601-1 certification) that we sent an ME device (with software) had the software deliverables on a checklist... but I had mostly disengaged from the project at that point. I have very strong recollections of the 60601-1 checklist, but nothing on 62304.
I feel obligated to disclose that our software development process is 100% aligned with 62304, and so we could have trivially completed a 62304 checklist by walking down our (internal) software development plan and report... which can partially explain why I have no memory of this. Our NBs have reviewed our software development process; I've no doubt that they looked at some actual deliverable as a cross-check. The deliverables for 62304 are rather closely aligned with the (quite well-established) FDA deliverables based on the FDA's Level-of-Concern, so these are the sorts of things that are routine (for us) to find and provide. If you have done an FDA submission it should be rather straightforward to identify artifacts.