Some reviews from Copa America's from a few years back
1941: Hosts: Chile. Participants (5): Argentina, Chile, Ecuador, Peru, Uruguay. Argentina and Uruguay were the two best teams by a large margin, both brought strong squads: Argentina (Moreno, Marvezzi, Sastre) and Uruguay (Varela, Porta, Gambetta). Brazil is noticeably absent. Champion Argentina. Official top player Sergio Livingstone (Chile's goalkeeper) is a seemingly strange choice as his team came in a respectable third allowing 3 goals in four games. Other possible top performers: José Manuel Moreno (The legendary forward scored 3 times, twice in a critical 2-1 win over a strong Peru team who were defending champions) and Antonio Sastre (Another Argentine legend makes an appearance scoring the decisive 1-0 winner vs their major rivals Uruguay) both seem to have good claims. Argentina's top scorer and tournament top scorer was Juan Marvezzi, but I do not consider him strongly as all 5 of his goals were vs lowly Ecuador.
1942: Hosts: Uruguay. Participants (7): Argentina, Brazil, Chile, Ecuador, Paraguay, Peru, Uruguay. For the second time we have a fully attended tournament with the all top teams bringing their top players: Argentina (Masanronio, Moreno, Pedernera), Brazil (Pirillo, Zizinho, Tim), Uruguay (O. Varela, S. Varela, Porta, Gambetta). Champion Uruguay. Official top player Obdulio Varela: The great center half who would later captain Uruguay to world cup glory led Uruguay to a very impressive victory in 1942, going 6-0 with a 21 goals scored and only 2 conceded in a stacked field, beating Brazil and Argentina 1-0. Other possible top performers: Severino Varela was Uruguay's joint top scorer with Roberto Porta, both scoring 5 times. Varela also scored the winner vs Brazil. José Manuel Moreno and Herminio Masantonio were the tournaments joint top scorers, both scoring 7 times, Moreno netting a critical brace in a 3-1 win vs Peru and Masantonio scoring the winner vs Brazil.
1946: Hosts: Chile. Participants (6): Argentina, Bolivia, Brazil, Chile, Paraguay, Uruguay. Another strong tournament where the top 3 all brought full strength sides: Argentina (Labruna, N. Mendez, Pedernera, Loustau, Martino, De le Mata) Brazil (Heleno, Jair, Zizinho), Uruguay (Medina, Schiaffino) as well as Chile and Paraguay bringing a competitive teams, only Bolivia was cannon fodder. Champion Argentina. Official top player Adolfo Pedernera: The great deep lying center forward and playmaker scored two goals both in important close wins vs Uruguay and Chile. Was the playmaker of the offense that scored a tournament best 17 goals in 5 games. Other possible top performers: Norberto Méndez again played a huge role scoring 5 times including a brace in the 2-0 win over Brazil in the final tournament deciding game.
1947: Hosts: Ecuador. Participants (8): Argentina, Bolivia, Chile, Colombia, Ecuador, Paraguay, Peru, Uruguay. Argentina were the clear favorites here with a very strong team (Di Stefano, N. Mendez, Boye, Lousta, Pontoni, Moreno) in the absence of Brazil. Uruguay lacked some of its top stars but were solid along with Paraguay, Chile, and Peru. Ecuador, Bolivia, and Colombia were poor.Champion Argentina: they did not disappoint going 6-1-0 and scoring 28 goals. Official top player José Manuel Moreno: he returned from his sabbatical in Mexico to River Plate and Argentina, he now was more playmaker than striker, scoring 3 times. Other possible top performers: Norberto Méndez and Alfredo di Stéfano both scored 6 goals and Félix Loustau scored an impressive 4 from the wing.