I agree anyone who has actually mowed a lawn optimizes for the least turns. E.g go all around the edges at the start and finish by doing the rest with as few turns as possible. Which is also how the vacuum robot does it because the edges are finicky with it bumping around the rest is easy. It is more efficient to turn less for a human at least.

There just shouldn’t be any buildings on those notes. Any good choices are too country specific. All of them are out imo only D & F I find actually inspired and good the rest of these designs should go straight into the bin. Stop birds, people, buildings then see what they can come up with. Gotta be better.