Participant Display List with (guest) (guest)

Hi

When I hold a meeting and view my participants list on screen I see the following in some of the names

James Bond (guest) (guest)

James Brown (guest)

James White (External)

Can someone please explain why there are two (guest) (guest) appearing on the first name. For the next two I know. Name with one (guest) are guest joining my meeting after registering their email with me and also the first name registered with me with the email . The 3rd with (external) are those joining the meeting with a different domain name.

I cannot find any information in the net on what (guest) (guest) mean. Can some wise Guru of MS Team enlighten me with this. Help much appreciated.

Best Rgds

Kish