Does anyone know if each 4X4 trim had different spring rates for the front coil overs?

Wanting to pick a spare set to use to prep my bilsteins to quickly swap out.

Set I’m looking at came out of a 2010 4x4.

 

There are many different front springs that were used depending on the options that a particular truck has and the springs rates can vary significantly

 

I guess to determine which spring rate I have is to measure the springs diameter.

 

Unfortunately that is the case, it's nice that Ford publishes their springs rates, but it would be even nicer if they provided a chart that matched up each spring rate with a specific part number for those looking to swap out to different springs.