The ones that make Africa look small.

I've found the Peters projection to be good and fascinating

https://en.wikipedia.org/wiki/Gall%E2%80%93Peters_projection

I’m not sure what your intent is, but I think the interest in Greenland is more about location than size.

This projection makes it look small, but highlights how Greenland sits right between Russia and the lower 48 of the US.

https://en.wikipedia.org/wiki/List_of_map_projections#/media...

I suggest the Goode Homolosine, which thinks so little of Greenland that it bisects it.

Well-played, well-meaning presidential advisor!

Download QGIS and you can just play with hundreds of projections. If you want Greenland as small as possible, pick a conical or planar projection meant for the southern hemisphere. It’ll pretty much stop existing if done right. If done wrong, it’ll grow to gargantuan proportions and surround us all. But I’m sure you’ve got additional criteria.

(Horray I reached my annual use of my geography degrees early this year!)

A conformal conic projection centered around the north pole would draw subequatorial land at a larger scale than Greenland. It doesn't affect the first three rules of real estate, though: location, location, and location

Not exactly a map projection, but on this site you can move countries (including Greenland on its own) onto other parts of the world for comparison. You can see that Greenland still looks pretty massive when you move it further south

https://thetruesize.com/

Globes are real. Remember globes? Hand him one