Here was my personal tier list; though I may have had thoughts and mostly judging how fun the campaigns are rather than side stuff or multiplayers.
It's possible I changed my mind in some areas for some, but willing to takes for each.
I know people say CE should be top 3 minimum, but didn't really stick with me as much as it did others. But it was probably the most Jack of All Trades game in the series. I also happened to like Infinite's campaign; mainly because of grappling hook and boss fights. And they finally gave John a short lived redemption after the Post Halo 4 era basically dumping on his character. Halo Wars 2 I also actually liked its story mainly because of Atriox; and it was finally made for the right platform and tried to balance the civilizations more; in Halo Wars 1, UNSC was just too good for Covenant or Flood based on design choices. ODST and Wars 1 had surprisingly underrated characterization. But too bad ODST was too short and easy and Wars was made for the wrong platform; big RTS games were not meant to be on any platform other than Desktops.
And yeah, if only Bethesda (The DOOM team specifically) developed the main shooters and that the Wars series has the OG StarCraft team. Latter definitely will not happen given the Activision Blizzard Controversy.