You can get sets with a wide variety of blade shapes which fit into an X-Acto type handle. Forget where I got mine (Harbor Freight?) but this would allow you to try out various methods.
Here’s one I just pulled up on
Amazon (not the one I have but similar)…
I think everyone has their own preferred tools and techniques.
And on top of that it seems like inlays vary a lot—how tough the glue is, whether the laminate and sticker come off together, etc. Every new chip type is its own (often frustrating) adventure, with its own learning curve.
For me, the challenge with removing tougher inlays is getting it started — making an initial cut or crosscut that goes deep enough to allow the non-acetone nail polish remover to seep underneath. But not such a deep cut that it damages the clay.
Once the liquid gets under, it usually allows for you to start prying layers up. Then another application of NANPR… And lifting with a knife tip or tweezers. Lots of trial and error with each batch, for me anyway.