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Gene admixture in the Costa Rican population - PubMed (nih.gov)
Estimates of accumulated admixture in the Costa Rican populations... | Download Table (researchgate.net)
As a Brazilian, they look very familiar to me.
The Portuguese are obviously closer to the Spanish in looks, and outside the Iberian Peninsula, they hugely overlap with Italians and Greeks.
Some users on anthroforums say that the Portuguese are slightly darker than the Spaniards and show more...