Stoke City around the late 90s/ early 2000s were owned by an Icelandic group. Following the takeover they installed Gudjon Thordason as the manager and signed loads of Icelandic players. They were in the modern equivalent of league one at the time.
Eidur Gudjohnsen was the biggest name, but off the top of my head they had Rikardur Dadason, Bjarni Gudjohnsen, Hannes Sigurdson, Gudmundsen, Gislason, Gunnarsson and Danielsson. That’s just to name a few.
Really strange experiment that and at a time when Iceland were a true minnow and not nearly as highly ranked as they are now. They did get Stoke up into the Championship though, although as time went on and following the exit of Thordarson, the Icelandic players dwindled. They had at least 15 in the squad at one point though.