The Numero group and all of the records they are re-issuing? on look-a-like labels

example here

Not sure what you mean "shed any light on" - they are a kosher outfit from Chicago who have been reissuing stuff and issuing the unissued for years.

https://www.numerogroup.com/

Loads of previous threads have dealt with different Numero releases ....

They do a really good job; tracking down old artists / producers/ studio owners and buying up old stock, acetates and master tapes to enable them to license & release the stuff. They go for obscure labels and have unearthed loads of great 'forgotten' soul / funk tracks

Their Boddie Studios (Cleveland) and Lou Ragland box sets are great examples of the quality releases they put out.