Is there a way to make a keyboard shortcut that switches between them? I'm hoping for a shortcut that spans all apps, not just a specific one (like iTerm below)
That might sound a bit funny now: you spelled out you answer all the time.
Use Tab to switch between all those controls and "Tabs".
In System Preferences > Keyboard > Shortcuts you might want to enable Full Keyboard Access: All Controls.
Some applications might be too 'dumb' to respect that. For Safari or iTerm: they are not.
Note that while cycling through the Tabs with:
- Tab = forward
- Shift + Tab = backward
the highlighting halo that indicates your position might be a bit smallish or dim, depending on your settings
- Space = select/toggle what is highlighted
Also note the varying options if you talk about browser-like tabs. The first 10 can be usually switched to directly by using Command+1 etc.
If cycling through browser-like tabs is your goal, the Tab key also works, but really cycles through all elements.
To only rotate through the tabs as such use Ctrl+Tab