How to check owner and licences of an Appstore application?

How to check owner of an Appstore application? And licences used for downloading it.

My problem is the following:

1. 
   

   I bought a new computer (MyComp) and connected my main account (Admin1) to apple-id (AppleID1), which I used on my work company computer (WorkComp).

   
   


2. 
   

   With AppleID1 I installed Numbers Pages and Keynote on WorkComp few years ago using licence, which company gave me.

   
   


3. 
   

   Now on MyComp system asked me to update these applications and I agreed.

   
   


4. 
   

   Then I understood that now I probably using the same licence and there can be a problems later. So I need to rid of connection between this licence and applications on my computer (they suppose to be free anyway).

   
   


5. 
   

   I created a new account on the MyComp (Admin2) and a new apple-id (AppleID2). But I saw that the applications are already installed and can be used by me. Nevertheless I tried to uninstall them and them download from Appstore again using AppleID2. And now I am not sure whether it worked or not, since everything looks exactly the same, and I know that applications on my computer can be installed using different AppleIDs, and I have no way to check to which appleID and to which licence they belong too.

   
   

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Also a little bit different question - may be it is possible to still use AppleID1, but somehow clear the licence for the applications and download them as a private user, who just bought a computer and can get them for free?