We own two Panasonic EVA-1s for my day job.
Dealing with that data is nowhere as easy as my personal camera a RED DRAGON 6K.
If you really want to avoid doing math, conform all EVA-1 media to ProRes422 or ProRes444 (not sure if there is any benefit to this one).
Another issue is that the EVA-1 media don’t play nice with Resolve.
My general workflow at work is FCPX/PPro > Resolve and back.
If I know I am not round-tripping then I proxy the lot in FCPX/PPro.
It’s safe to say that the other formats you’re dealing with should be easier to work with.
But again, I would convert them all to an editable container (ProRes).