Koch Media is owned by THQ Nordic AB and handles much of the physical distribution in Europe.
Koch Media is not mentioned anywhere on the games they distribute.
All retail/physical copies by the partners listed
here, are likely distributed in Europe by Koch Media.
Retailers sometimes have pages like
these, detailing all the products associated with a specific company.
Best way to avoid Koch Media is to buy digital.
Coffee Stain is also owned by THQ Nordic AB.
Their upcoming (early access 19th March) game Satisfactory will be available exclusively on the Epic store, so avoid that one doubly.
And
these are other subsidiaries to look out for.
Someone's probably posted this
list of THQ Nordic games already.
Do note that a bunch are of the Koch Media kind, where it's only physical distribution in Europe. Or worldwide physical, like with
Generation Zero.
Generally, digital is fine unless the game is actually published by THQ or a company it owns.