Ryan Reynolds and Rob McElhenney were taking on ownership of Wrexham AFC — a historic football club then playing in the fifth division of the English football system, nestled in a modest working-class community in northeast Wales — certainly qualified as a shocker. Comparatively, it was less surprising to later learn that the two were also creating a docuseries chronicling their maiden voyage as chairmen of the club, with camera crews following Wrexham’s 2021-22 season as the team attempted to secure promotion into the upper rungs of English football for the first time in well over a decade. What was surprising, however, was realizing that the docuseries in question, FX’s “Welcome to Wrexham,” is only obliquely the story of two Hollywood stars bumbling into the world of football.