RDS
I’m going to go out on a limb here.
The human eye does not naturally line up handgun iron sights with a target. It is an unnatural effort. All the varieties of shapes, sizes and colors are meant to simplify this unnatural sight alignment. Inherently, they don’t, because the same problem exists of the human eye being unable to focus on three different planes quickly and accurately. In some cases these enhancements actually confuse the eyes/brain and make focus and training harder.
This system of sighting is based on limited anatomical knowledge of 150 years ago. Some sights are better than no sights when precision is needed. That the basic principles of sighting a handgun have not progressed in concept for over a hundred years is surprising. All variations of open notch/post handgun sights are compromises.
If you want to stick with tradition, I suggest the simplest, fastest, least obnoxious sight set up that works for you. It should not be fragile, huge, complicated, or overly colorful.
Except, the red dot sight (RDS) on a handgun is actually the new, modern alternative that really works. One plane of focus: the target, more accurately in self-preservation shooting called the threat.
It is undeniable that your eyes and brain will focus on the threat trying to kill you. Artificially trying to force your eyes/brain to “focus on the front sight (and the rear and the target) is a waste of training time and effort. Enhancing iron sights does little to overcome this systemic weakness. People will say it has worked well for years so it must be good, but compared to what? Black and white 24” TV’s were all the rage in 1956. And today?
So, enhance an historic sighting system with whatever additional compromise you believe improves your shooting. If this is a life/death issue you are setting up, maybe consider a totally different approach: RDS.