Welcome to the site. Having seen the IRs for the missing sets you've submitted I can pretend I can help there.
First, thank you for identifying sets that need to be entered, that help immensely. When creating a set we also need a checklist that goes with it. This is a crowd-sourced site so the members are the ones that provide the information. The members are also the ones that volunteer their time to keep the site accurate and resolve those IRs. With that said, there's no "research team" sitting around to go find missing information. Some while, but ideally it'll be part of the request.
The comments made back are in relation to that. If you have sets that you know needs to be entered, hopefully you can provide the checklist info so it can be entered. You don't have to upload the checklist itself, there's plenty of people here that will help you sort it out. We just need the information so it can be created and entered into here.
Nominally, a checklist would have all the cards in the set included. 40 card set so 40 card names, 40 card numbers, etc. Seeing that you have asked about older non-sport sets, any information you can provide to help get something compiled helps immensely. You can use the forum threads to post partial checklist info and others will help put it together.
When night comes creeping in,
Dark restless shades arise.
Prepare to crawl and run.
The Black is here tonight.