Generic classical force fields such as Dreiding and Universal Force Field (UFF)
Charge prediction models such as: Charge Equilibration (QEq) and Polarizable QEq(PQEq)
Reactive Force fields such as ReaxFF, ReaxPQ, and RxVBPQ
Electron containing force fields such a Interstitial Electron Model (IEM) and electron force field (eFF)
Materials
For UFF we go up to Lw(Z=103)
The others are for various classes spanning periodic table