Depth refers to the depth of the crawl. 0 means the page you entered, 1 means the page and links on that page, 2 means the page, links on that page, and links on those pages, and so on.
Crawl Type refers to the type of crawl:
Domain only means the crawl will only crawl the domain you entered. i.e if the url is https://bbc.com, the crawler will only access any URL with bbc.com as domain.
Domain with page links means the crawl will crawl the domain you entered and all links on the page you entered.
- Full means the crawl will crawl the domain you entered and all links on the page you entered and all links on those pages.