Orbital mechanics is a very interesting topic.
Usually when you see an orbital track displayed on your computer you see a nice sine-wave pattern.
Then we have geostationary satellites like GOES-17, oh yes it is orbiting.
Have a look at the seemingly odd orbit of the recently launched TESS.
Thanks to N2YO for those great links and check that site out – great stuff!
Scott Manely has a good video out: T”he Most Confusing Things About Spacecraft Orbits”