Different showrooms will name their own granite so the same granite I name for you may not be the same name in your showroom. You could go to the MSI International website and look at both the granite and quartz options for an idea. The Quartz will look the same since it's mostly man made. Granite slabs will vary so it's best to go look at them in the showroom. https://www.msistone.com/granite-countertops/

It's always best to go to a granite yard and look at slabs in person. If you select a few, the workers can knock off a corner of the slab for you to bring home and see within your own home. Lighting is everything so make sure you bring home samples. I would recommend you not go to home depot or lowes as their samples do not represent the actual slabs well. Natural stone has variation and you need to see the slabs in person.

There's something called Gris Perla other things, that has a white background with black, gray, and tan spots (variable with slab a bit). Usually among the cheapest granites in most show rooms. Something like this:

Might be a perfect fit for your room and your future ambitions. But look at the samples and see what else might appeal -- no substitute for seeing things in person, and then you can bring home samples of the final candidates to compare with other finishes in your house.

If you look at quartz, LG Aria has the colors you mentioned. I have LG White Pearl (pics in my "my pics" idea book) and it also has similar colors, but not the black.