Guam is more or less American.
Guamanians serve in the US Army, or did when we were stationed overseas.
Speaking as someone who draws people for hobby reasons;
that race or ethnicity (Samoan) of people produces big, tall and strong individuals, both men and women. Similar in a way to some of Germanic heritage in the Netherlands, the people are in general tall, and strong, but lanky, and more in proportion than Samoan. Samoan type often appear to be top heavy as adults.