Bloggers tend to leave a long trail behind them, and I've been going through mine.
Two practical tips. First, do the audit in a private window while signed out, and repeat it with your town or an old employer added, because personalised results can hide things. Note the date and the exact query for each URL. Second, for pages you control, delete or edit them first, then ask Google to refresh the old snippet with its outdated content tool rather than filing a privacy request. That route exists precisely for pages that have changed or disappeared.
Third-party pages are more involved: the publisher, Google's own personal information policies, or EU delisting, each with different rules. This guide to removing your name from Google separates them clearly.
How long did the outdated content tool take to update a result for you?