I’m afraid it would still be made of atoms. All substances are made of atoms. The distribution of protons, neutrons and electrons inside each atom control the properties of the atom.
The periodic table lists all possible combinations of protons, neutrons and electrons. These are the elements. There are no other possible combinations, so there can be no new elements. We can combine different elements together to form new compounds and alloys, but these are still made of atoms, just in different combinations.
The earth’s core consists of iron and nickel at very high pressure and temperature. The inner part is solid, the outer part is liquid. However, it’s all just iron and nickel, no new substances are being created there.
Yeah as James V says everything is made from atoms, they are the building blocks for everything we can see around us (and also everything we cant see!). You will never find anything that doesnt have an atom as its base.