Yeah I mentioned this here also: Merchant Grouping
I think really there should probably be some kind of hierarchy where for example “Tesco esso”, “Tesco extra”, “Tesco blah”, etc. are all under “Tesco”. Then PayPal merchants would be under “PayPal”, and other merchants might be under their payment processor.
Then the app has access to all the possible details, and can make the decision about the best data to render depending on the chain.
E.g.: if the parent was PayPal or Tesco, it would probably be shown. If it was Stripe, probably not.