Interested in method that obtains a list of updates from RedHat Satellite from a baseline to current date

I can install RHEL6.9 baseline iso to a system and then run "yum check-update", this would give me a list of rpm updates from the 6.9 baseline to the current date.

Supposing I don't have a freshly installed baseline system, is there some way to query RedHat Satellite for a list of all the rpms starting from a particular RHEL version to today? The reason I want this is to implement a way to create my own fully updated ISO.

I'd be even more interested in a tool that would actually create such an updated iso but from searching I've done there doesn't seem to be such a thing?