As per the manufacturers websites...
OEM spring rates:
F- 172 lbs/in
R- 137 lbs/in
Mountune spring rate:
F- 181
R- 144
Drop is 1.1 front/0.8 rear
Eibach spring rate:
F- 109-172
R- 58-143
Drop is 0.8/0.7
This is a progressive spring, unlike the Mountune set.
Cobb doesn't list spring rate, but the drop is exactly the same as Eibach and they are listed as progressive.
That's being said, Mountune are probably produced by Eibach to Mountune specs, where as Cobb's are just rebranded Eibachs.
EDIT: For the record, I had H&R springs and while the car looked awesome and was dumped, it was a tad stiff for me. I switched to Eibachs and absolutely love the looks and the progressive rates.