Part of macOS
screensharingdScreen Sharing
○ Leave it
Lets someone you allow view or control this Mac.
What it is
Runs when Screen Sharing or Remote Management is on in Sharing settings.
If you stop it
Anyone connected is disconnected. Turn it off in System Settings › General › Sharing instead.
The verdict
○ Leave it. Part of macOS, or something that starts again by itself. You never need to close these.
In Activity Monitor
screensharingdScreensharingAgentAppleVNCServerARDAgentRemoteManagementAgentremotemanagementdSSMenuAgentVNCPrivilegeProxyRFBEventHelperd
From Procession’s guide, in the words the app shows.