Type and location of Antennas in Orbi... Wall Mount of Orbi

I'm using the Orbi wallmounts that I got from Amazon https://www.amazon.co.uk/gp/product/B0793LKH58/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

I noticed that the wifi coverage was better when I had the Orbi Router and Satellite on the floor than when they are now wall-mounted.

Any information about the type and location of the antennas in Orbi: Directional, Omni-Directional, .... and if they are positioned on the top, bottom, side of the Router/Satellites?