I was speaking mostly of the MagSafe ones. But the same applies to the USB-C ones, Apple sell more than one USB-C power adapter for MacBooks (and that is before you start considering the ones other people make).

The USB-C PSU that ships with the MacBook is not the same as the one that ships with the MacBook Pros. The MacBook ships with a 29W one, the MacBook Pros ship with a 61W one.
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Remind me to change my signature to something more interesting someday