In drafting and player development, things tend to come in waves. Draft classes tend to cluster in specific leagues due to developmental cycles, which in turn leads to several players from the same league hitting the pros at the same time. The Calgary Flames have rode a few specific developmental and acquisition waves over the past few seasons, but they have a potential invasion of Swedes looming in 2020-21.
Previous waves
The 2018-19 season saw a pretty significant wave of Western Hockey League graduates going pro. Dillon Dube, Juuso Valimaki, Glenn Gawdin, Matthew Phillips and Nick Schneider all jumped into the pro ranks.