This experiment has gone so well, we're rolling it out to everyone on desktop!
When you scroll down on the YouTube home page, you may see the "From your subscriptions" row of videos. Head over to the Subscriptions tab to see all videos from your subscriptions.https://twitter.com/TeamYouTube/status/1029107269668024323 …
I am also suggesting this but in the meantime you can use chrome extensions and a third party app on smartphone to do so.