D500 and D750 are much the same camera, except AF, control switches on the turret, DX sized sensor, shutter, mirror and viewfinder (the reduced mass is why it can get the extra 3 FPS) and, of course the AF and meter units.
I think you just reinforced my point.
No, I didn't.
That's a long list of "excepts" -
Yup, the list of 'excepts' is mainly down to it being a DX camera, against the D7200 it would be a much shorter list
and you still missed out the built-in flash
Let's go back to your list:
Like the D750, not the D5
Like the D750, not the D5
Like the D750, not the D5
Like the D5
Like the D5
Sure, but on that basis the D7100 (styled like a D4) isn't 'like' a D7000 (styled like a D3).
In the beginning, there was the D2 (the D1 being a hacked F100 and the D100 a hacked F80). The D2 begat the D200 and the D3 which begat the D4 which begat the D5. The D200 begat the D300. The D3 begat the D700. The D4 begat the D800 which begat the D810 after an illicit relationship with a Canon 5D.
Nikon looked at the D100 and saw that it was good, but too expensive to build to allow it to be sold to the masses, so Nikon made the D70 from a sensor it took from the D100. The D70 begat the D50 and D80, which begat the D90, which begat the D7000, which begat the D7100 and D600. The D600 begat the D610 which begat the D750. The D7100 begat the D7200 which begat the D500.
Nikon Looked at the D50, and decided it could be taken no further, so it made the D40, which begat the D40X, which begat the D60, which begat the D3000 and D5000. The D3000 begat the D3100, which begat the D3200, which begat the D3300, which begat the D3400. The D5000 begat the D5100, which begat the D5200, which begat the D5300 which begat the D5500.
The D500 is of the House of D70, not the House of D2.