Triage acts like a powerful inbox: it includes your emails, notifications and mentions; in other words, everything that relates to you and requires your attention.
Only you have access to your triage and emails, unless you share them with the rest of the company (by adding the contact to your account or assigning the email to a colleague, or adding the email to a work or contact timeline or sharing your emails for that contact).
Further reading:
How can I see who has visibility to an email