The magic formula to get the right CPU is to find a LGA1150 socket compatible with low TDP (less than 65W), here are some results for that search https://pcpartpicker.com/products/cpu/#m=21&s=12,13&k=24&T=10,65&f=34,40
That page also suggests you the store with the lowest price, but always check the other stores since it doesn't count taxes and shipping.

I found useful information on this thread https://www.alienwarearena.com/ucf/show/228579/boards/technical-support-1/ForumPost/any-cpu-in-alpha-true

Also, this video can help
https://youtu.be/A4UtbzAl2IE