Google "recessed cabinet pulls" or "flush cabinet pulls" and you should find several options.

I have some doors where there is a small spring loaded push thingy that pushes open the cabinet door when you "push" on the cabinet door. None of my wall cabinets have handles. This is to keep the minimalist look. This is very common with European cabinets. I attached a video that you can see.

I also have some where there is carved cutout to pull the door open.

They both work well. I don't think about it anymore since this is what I have had for a few years.

Here is a link that might be useful: push to open system

Fillers aren't just for handle clearances. They HAVE to be used with full overlay cabinets because walls aren't straight enough to place a cabinet right next to them without at least 1" of filler.

The spring loaded push thingy is called a "touch latch". I have several - on minimalist looking doors and on glass doors. They work. They are cheaper than handles.

>The spring loaded push thingy is called a "touch latch".

Or a push latch

If your cabs are partial overlay you can router out a slight bit on the bottom of the door on the back, just enough for your fingers to slip under and pull the door open. My original kitchen doors were all that way. Never had issues with the facing getting scratched or the doors either