I like a moderate winged handlebar, so you have that one already.

There are some thicker tapes. A couple of brands list 3mm+ tapes.

I think I did feel a bit of road buzz on a longer ride using my Tannus tires. But, that may be an indication that one should consider the tires carefully. I do ride narrower tires, but perhaps it is worth considering slightly wider tires, and lower pressures, especially on the front that generally carries less weight anyway.

I have an aluminum Specialized Roubaix bar on one bike. A few thousand miles, and I'm still trying to figure out if I like it. It probably helps slightly with the road buzz, but also has a little flex that presumably impacts standing hill climbs.