I did not know that, however that is a bit different since they had the Powerbook. So that's more of a rebranding than a new product.

I do realize that the name change came with a switch from PowerPC to Intel.

Even with the PowerBook, the PowerBook came before the iBook.

The Mac (Pro) came before the iMac/Mini etc too

The pro moniker is just branding but they usually start with the pro line for more expensive hardware.

Even with the iPhone, the current pro line is a continuation of the main line iPhone that evolved via the X.

They upgraded the MacBook (Pro) to the M3 chip while the Air had to wait (and skip the M2 at all).

I'm not sure what you mean. There's definitely an M2 Air and an M2 Pro.