Does get a bit confusing..

Tekonsha is a large supplier, have been for years, good units. Draw Tite, Reese, Curt as well.
Basically there are two types,, Proportional and Timed delay/activation.
Proportional is just that, where the controller applies the trailers brake at the same basic rate as the tow vehicle. They tend to be a bit more expensive but some like them because of brake application equal to the tow vehicle causing even brake wear etc. with less risk of control loss..
Timed units are more ‘occasional user’ units, with Gain/sensitivity control for more ‘seat of the pants’ control. There are many of these installed and work just fine, and for me, i like adjusting my trailers application at times. Tend to be a bit less expensive as well.
When selecting a controller, it’s normally by how many axles/brakes the unit can handle. I’ve installed many that NAPA and such offer, most were timed controllers. I like having the gain and sensitivity customizable. Generally going with a mid priced unit will get you what you want, with a warranty for some years..
I can help you with wire routing, harness wire selections for adding in the trailer adapter you choose.

Was the door lock question on another post for this same vehicle?