On ear (a.k.a on-the-ear or supra aural) headphones sit directly on your ears and don't (or barely) touch the sides of your head itself and they are less common and not anually upgraded (even discontinued) to the next gen as TWS or over ear headphones.
The Libratone Q, for example, was released in 2017 and now in 2022 their next gen with new Bluetooth SoC and more advanced NC algorithm or adaptive noise cancellation has not been introduced yet. Beats also discontinued Beats Solo Pro for good. However, on ear design is more portable since their ear-cups are smaller and if you're in the market for some comfortable on-ear headphones, check out some of our favorite picks for 2023.