Growingannanas has super good HIIT workouts the production value is really good for such a new channel. Her new videos are the nicest as she is by the sea I hope she is able to do more videos like this with the similar background.
Only missing thing is low impact versions /high impact versions on the video. Due to this missing function some of the workouts are either too easy or too hard. There is neither playlists to tell the difficulty level which can make it a bit hard to know the best workouts for your own level.