“Fermions are leptons and quarks, which make up all matter. The bosons make up all energy. Atoms are not elementary particles, but compound ones, so you have more combinations of those.”
What constitutes an elementary particle then? Are there many kinds? Are they something we engage while we live, or a picture of something that exists for ‘less than a moment’ on a ‘photo’ in/from some ‘tron machine/collider’ ?
Nope. They’re the limit of our knowledge.