A native of Houston, Texas, Ogbonnia threw 20.72m (67-11.5) on his fifth attempt to capture gold.
Larsen will be recognized by USATF on Saturday, July 27 at 2:52 p.m., during the Toyota USATF Outdoor Championships.
Guttormsen cleared 5.50m (18-0.5) on his first attempt in the finals of the European Athletics U23 Championships.
Ogbonnia, who most recently became the USATF U20 Championships shot put champion, is one of only 84 athletes who will represent the United States.
Three Stanford women represented their countries at the NACAC Under-23 championships, with Jenna Gray earning the highest finish among them.
Wilson became the NACAC U23 Hammer Throw Champion with a mark of 63.95m (209-9).