HGTV, Magnolia Network,
and Discovery Channel

Yes. The streaming services that offer HGTV include YouTube TV, Hulu + Live TV, DIRECTV STREAM, Philo, Sling TV, Fubo, and discovery+. You can also stream select HGTV shows on Max.
You can download the HGTV app for free, but you’ll need to subscribe to a service provider to watch the content. 
Yes. The streaming services that offer Magnolia Network are discovery+, Fubo, Philo, DIRECTV STREAM (add-on), Hulu + Live TV, Sling Blue (add-on), and Sling Orange (add-on). You can also stream select Magnolia Network shows on Max.
Magnolia Network has an app, but you’ll need to subscribe to discovery+ to have access to Magnolia Network shows.
Yes. The streaming services that offer the Discovery Channel include YouTube TV, Hulu + Live TV, DIRECTV STREAM, Philo, and Fubo.
The Discovery Channel has an app, but you’ll need to subscribe to a streaming provider to view the shows.