Can I remove the "From App Name" line from PWA push notifications?

This is what a notification from a PWA (or Home Screen Web App) looks like on iOS (sent from Progressier or any other PWA solution).

The format is the following:

[Notification title]
[from] + [app name]
[Notification body]

Can the second line be removed?

Unfortunately, no. There is currently no way to remove the “from + app name” line from PWA push notifications. This is how Apple chose to render push notifications on iPhone and iPad.