This is right up a cabinet shop's alley. You might want to revise your description to "high gloss" unless lacquer is a must for some reason. Perhaps you use the term loosely. In these days of constantly lowered VOC's, where lacquer is becoming a thing of the past, it could present a stumbling block.

What you're basically describing are laminate sheets in a gloss level sheen that you can cut to size for a MDF substrate that you produce. Formica and Wilsonart will both have laminates available in a gloss finish. Working with gloss finish laminates is a real PIA. They scratch VERY easily, even with a protective coating. You might have better luck creating the MDF substrate and then getting a painter to spray gloss enamel on them.

Yet another idea for deep pockets, titanium coated #8 stainless sheet(s). Available in colors and black. #8 is a mirror polish.

Live wire oak, I had the same thought with MDO and a spray coat, just wasn't sure of adhesion. Probably not a problem.

Formica laminate on MDF should work well for me. It looks like their new line of AR Plus high-gloss laminate is exactly what I want.

But now the problem is, what is the easiest way for me to get these? Can't seem to just order them from some place... Thanks!

A countertop place should be able to make the panels for you.

People also use glass splashbacks as in kitchens, there's a special paint for the back. It would be expensive.

You could also use plexiglas or lexan panels, but they'd need to be mounted on something.