Brush Bar
Ranch Hand has some for the eco in different designs for decent prices. I dont know how aggressive you are looking for and how much you want to pay but Road Armor has some awesome looking bumper replacements that say ecoboost compatible.
I am not sure from the wording of your post, but if the issue is your searches only yield bull bars or light bars, did you try searching for "brush guard" instead of brush bar?
If the issue is fit with an ecoboost, due to the fact that we are not supposed to impede the airflow through the bumper cutout, I have seen a couple that mount to the factory bolt holes in the opening, and others that mount to the tow hook locations. The problem with many is that they integrate some type of skid plate that blocks the air flow, or the lower bar is in the way.
If the issue is fit with an ecoboost, due to the fact that we are not supposed to impede the airflow through the bumper cutout, I have seen a couple that mount to the factory bolt holes in the opening, and others that mount to the tow hook locations. The problem with many is that they integrate some type of skid plate that blocks the air flow, or the lower bar is in the way.

