Something a surprisingly low number of canon shooters is aware is that you can have exposure compensation together with auto iso (in manual mode) with some canon cameras. It works for my 5D4, and I would wonder if they removed the feature for more modern cameras. On the 5D4 you have to define a key combination for this, as both wheels are used for other purposes and there is nothing preconfigured. I have it on pressing “set” and the front wheel.
This is so extremely useful that I totally rely on that, and often struggle with my RX100M2 which does not even have a proper auto iso.
Hope that helps 
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