I have used dozens of Linux distributions and there are no Mac-like defaults at least in the most popular ones. That’s said most up-to-date distributions either share their own dark theme as default or provide Breeze theme. As it was said already KDE/Plasma is highly configurable and you can change everything you want. There are full themes ready to install for Windows and Mac look, so it’s not really that hard to setup it. I guess the biggest thing here may be only keyboard shortcuts which of course you can customize as well.
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