Imo, strongest to weakest - I recognize that some of these are meant to be the same iteration of the character, but there are differences in the portrayals:
Halloween 6
Halloween 4
GAP
Halloween Kills
Halloween 2018
Halloween 2007
Halloween 2 2009
Halloween 5
GAP
Halloween 2 1981
GAP
Halloween Resurrection
Halloween H20
Halloween 1978
GAP
Halloween Ends
Maybe the most controversial ranking is Halloween 5. Yes, ostensibly he’s the same Myers as 4 and 6, buuuuut he comes across as less strong and durable - has issues with s very thin wooden door in the Myers house and gets pretty easily taken down by Loomis (admittedly after being tranquilized).