Invisible: It is a status that lets you appear offline in Discord but leave you logged in.Under this status, all your Discord-related desktop notifications will be automatically muted as well. It is a manual setting that appears as a red circle next to your avatar. Do Not Disturb (DnD): This status lets other people know that you are not ready to chat and shouldn’t be disturbed.Moreover, Discord allows you to manually set an Idle status for an indefinite period.
When you are in Idle status, a yellow dot will be activated next to your avatar. This status lets other people know you are open to communicate, interact, and play a part on Discord. Under the Online status, a green dot will be indicated next to your avatar. There are 5 main status types on Discord: Online, Idle.
One of the biggest advantages is that Discord can set a range of statuses, while other chat apps such as Skype and WhatsApp only allow users to appear online or offline. Read More What Are Status Types on Discord