Flew to and from a little GA airport to see the eclipse in a Cessna 182. Flew commercial from a little airport to a big airport on a Cessna Caravan, and then flew between major airports on A319. The flight on the Caravan was probably the most pleasant commercial flight I’ve been on.
182 4 seats (including pilot) piston engine, you might see one for a sightseeing adventure, but otherwise a popular model for General Aviation (private, non commercial) pilots.
Caravan, turboprop built as a cargo plane. The one I was on was set up for passenger service and had room for ~12 people (including pilots)
A319, The short plane in Airbuses A320 line. That competes with Boeing 737s