I’m not sure what you display but in my case even if they don’t have the same location for packages (.julia/packages/) they both use MKL one I install on one of them.
So it has nothing to do with the path of the Julia binary but the path Julia use to look for packages (I might not be accurate as I’m not an expert on the way Julia handles things).
Look for the BLAS vendor on those two. Verify they are different.
Regarding the version of MKL.jl, it is not official package hence anyway it is being installed form the Git itself and not from a specific release of it.