Rights a Media first had a charge re Everton borrowings in August 2016 but that loan was cleared in a relatively short period of time.
They didn’t re appear it seems in terms of having a charge registered until September 2019.
Some real classic names have registered charges . Names like Singer & Friedlander, JG Funding, Industrial &Commercial Bank of China Ltd.
As for Rights & Media. I am not sure that the description the Guardian use namely they are Opaque is quite fair bearing in mind that they are a UK registered finance provider for me the irony is that The Guardians ownership ultimately can be traced through a hierarchy of companies to The Scott Trust Ltd .
To be fair it does seem that R&M are lending ever increasing sums but Everton are not alone in seeking advances from this company indeed Forest it seems are also customers.