BS”D Doesn’t Coors still have an OU? Guinness is supervised by the KF of London IIRC although not marked as such, and with the trend towards more hechsherim on more products I am sure more beers will be available with certification.
Besides isnt Maccabee still exported to the US? It shares both a Badatz hechsher and a similar taste with Sano cleaning products but Sano products would look funny at a sholom zochor.