I’m not an ortho or anything you might call an expert. Just a daily sitter. Wheeled swivel chairs with arms are fine if you can fit in. Wide-bodied people will be more comfortable with armless chairs but the trouble is, the swivel and the wheels are a hazard when you try to sit down at a bad angle, or in a hurry. A number of portly colleagues of mine ended up on their butts when they tried to sit down in a careless manner.
If you don’t like the rigid kitchen chair, which is the safest, get a swivel with locking wheels, and whose arms can be ratcheted outwards on either side to accommodate anyone sitting down. Once seated, the arms can be ratcheted back inwards for comfort and safety.