Updated 9th July 2021
Added shows that are premiering on Discovery + and will also be on the Magnolia Network.
Source: https://www.cinemablend.com/television/2563138/fixer-upper-and-magnolia-network-shows-you-can-stream-on-discovery
Please note that I could not find Fieldhouse or Self-Employed on Trakt yet.
Discovery+, HGTV & DIY shows
by 1Maenad