From The Greatest Minor League: A History of the Pacific Coast League, 1903-1957, by Dennis Snelling (McFarland, 2011), Kindle Loc. 1314-1328:
Although Asians were not welcome to play with or against whites on the Pacific Coast, mixed-blood Hawaiians could, provided they were of the right mix, unlike Lang Akana. Pitcher Barney Joy had been the first, joining the San Francisco Seals in 1907. “Honolulu” Johnnie Williams was a pitching sensation for Sacramento in 1913; the Detroit Tigers offered eleven thousand dollars for his contract and he played briefly for them the following year. Williams then returned to the Pacific Coast League until arm problems led to his release by Los Angeles during the first week of the 1916 season.
Latins had never been represented in numbers reflecting their interest in the game, although a few had been allowed to make their mark. Esteban Bellan, a native of Cuba, played in the National forerunner of the National 1871 to 1873. Sandy Nava caught Charlie Sweeney in the major leagues. Cuban Armando Marsans played in the majors even though he was fairly dark-skinned. Fellow countrymen Dolf Luque and Mike Gonzales had long careers in the major leagues. Pitchers Jose Acosta and Ignacio Rojas, outfielder Jacinto Calvo (whose father was a rich sugar planter in Havana) and infielder Louis Castro were among the few Latin-born players to appear in the Pacific Coast League during its first couple of decades. Pitchers Frank Arellanes and Sea Lion Hall (born Carlos Clolo [apparently not true; see note 27 at the link—J.]), also pitched in the PCL and were of Mexican heritage but born in the United States. Hall gained notoriety as one of the first relief pitchers in the major leagues and threw four no-hitters in the minors. He earned his nickname because of his loud, barking voice. He was also called “The Greaser” by those less genteel, who quickly learned those were fighting words.
Consistently derided about their racial heritage, Native Americans were nevertheless considered valuable drawing cards. Louis Sockalexis was one of the first, starring at both Holy Cross and Notre Dame and then with Cleveland in the National League in the late 1890s. The New York Giants employed catcher John “Chief” Meyers. Brooklyn’s star outfielder Zack Wheat was half-Cherokee, although he did not advertise that fact. Albert “Chief” Bender of the Philadelphia Athletics was one of the game’s best pitchers. The great Jim Thorpe was playing in the major leagues of both baseball and football. There had been several Indians in the PCL, most commonly pitchers, including Casey Smith, Ed Pinnance, Sammy Morris, Louis LeRoy and George “Chief” Johnson.
Because Indians enjoyed relative acceptance among the public and their teammates, there were occasional but almost universally unsuccessful attempts to masquerade black players as Native Americans.