The Edmonton Oilers began their existence as an inaugural franchise of the World Hockey Association, though for their first year of existence, they were the Alberta Oilers. Their run in the WHA was largely unproductive, as until the end of their run in the upstart league, they accomplished very little. They would reach the Avco Cup Finals in 1979, where they had the young phenom, Wayne Gretzky leading the way. He would be the lynchpin when Edmonton joined the National Hockey League.
Gretzky would be the megastar of the team and other future Hockey Hall of Famers would join him. This would include Mark Messier, Jari Kurri, Paul Coffey, Glenn Anderson and Grant Fuhr, and they would win four Stanley Cups in the 1980s. After dealing Wayne Gretzky to the Los Angeles Kings, Edmonton would still win another Cup based on the leadership of Mark Messier. To date, that is the last championship that the Oilers have won.
Since that time, the Oilers have only made one more Finals, a surprise run as an eighth seed. They did not win, and would plunge to the basement of the NHL standings.
As of this writing, they are a young team with upcoming stars that could add to their post-season success.
This list is up to the end of the 2018/19 season.
Note: Hockey lists are based on an amalgamation of tenure, traditional statistics, advanced statistics, playoff statistics and post-season accolades.