A bassinet or bed side crib that rocks?

Ash • Married 8.2.2014. 1st Boy 11.24.16. 2nd Boy 8.27.18
I've been thinking about a rock n play but my mom brought up a good point that newborns should lay flat. So does anyone know of a bassinet or small bedside crib that rocks? I looked at a halo one but it doesn't rock and seemed very jerky.