Aaaaaand the issue is fixed: your YouTube homepage should be back to a grid view – not the list view! Thanks for your patience while we worked to resolve this.https://twitter.com/TeamYouTube/status/1189934443856687104 …
There's currently no way to change your Homepage's settings, but thanks for letting us know that this is something you want to be able to modify. Drop your comments here: http://yt.be/help/feedback . That's how we collect and prioritize requests!