As an opposite answer, you can get steel suspension on the Laramie but not available on the Limited.
What Electrical means is that the Limited only comes with the air suspension whereas the air suspension is optional on the Laramie.
On my Laramie, I do not have the protection group but I do have the tow hooks. Mine are chrome because I ordered the chrome appearance group. I'm not sure what option gave me the tow hooks. Perhaps black tow hooks were standard.
I chose the Laramie because I wanted the two-tone paint which was not an option on the Limited. I ordered a number of options on my Laramie and I am extremely happy with my choices. MSRP was around $63,000 so I was in the ballpark of a Limited.