all base 10.
You see, this is part of the problem. SI seems more logical on paper, but in practice if you want to divide by anything other than 2 or 5 you have to pile on the decimals or switch to an unwieldly small unit of measurement, which hampers the ability to use those measurements. The most commonly used “standard” measurements are the way they are because they were the most useful measurements for actual craftspeople to standardize to, while the SI system was dreamt up by a bunch of rich French people.
When will you ever convert inches to miles? One of these is for measuring things that you can pick up with one hand, the other is for measuring traveling distances.
The useful thing about standard measurements is that base-12 is much more useful in daily life than base-10, which is only easier to work with on paper. Make a footlong object and you can very easily make 1/2 1/3 1/4 1/6 and 1/12 versions of it, make a decimeter long object and you can only easily do 1/2 1/5 and 1/10.