Which of the following traffic sources are categorized as Direct in Google Analytics? $($select all that apply$)$

Question $5$ options:

Traffic from "dark social"

An untagged email $($not from an email service provider$)$

Clicking from an HTTPs site to an HTTP site

Traffic from a link in a PDF

Accessing the site via a browser bookmark

Typing the url directly into the browser bar

Traffic in incognito or private browsing mode

A link sent via text message

Traffic from WhatsApp