That is what we discovered on Wikipedia concerning the West Coast Eagles:

The West Coast Eagles are a professional Australian rules football club based in Perth, Western Australia. The club was founded in 1986 and first competed in 1987 as one of two expansion teams in the Australian Football League (AFL), then known as the Victorian Football League. The club plays its home games at Optus Stadium and has its headquarters at Lathlain Park. WA Football wholly owns the West Coast Eagles and the Fremantle Football Club, the AFL's other Western Australian team.

The West Coast Eagles are one of the most successful clubs in the AFL era (1990 onwards). They have won the equal second most premierships (four, along with Geelong, second to Hawthorn and Brisbane) of any club in that time and were the first non-Victorian team to compete in and win an AFL Grand Final, achieving the latter feat in 1992. The Eagles have since won premierships in 1994, 2006 and 2018. They are one of the most profitable and influential clubs in the league, and as of 2021 have more members than any other club with over 106,000.

West Coast also fields a women's team in the AFLW competition and a reserves team in the WAFL.