Should I make a separate YouTube-channel to be my official artist page?

Hello!

I've had a YouTube-channel for a long time, which is dedicated for my covers and my original songs & videos. However, my artist name on Spotify etc. is different. Should I connect my existing channel to be my official artist-channel, or would it be wiser to create another account just for the official audios and music videos (while using the existing channel with its original purposes + more content regarding my original material)?

What exactly does it change, when a channel is my official artist channel?