I took this test 20 years late.
Since 1998, millions of people have used this Harvard online test to test their implicit biases. [Link to the test in comments]
An Implicit Association Test (IAT) is a psychological test whose objective is to reveal unconscious biases. It measures the time that takes an individual to classify concepts into two categories.
Basically, the IAT runs participants through quick tests during which the participants’ responses would reveal certain underlying mental associations.
The tool helps examine inherent thought processes related to age, weight, political leanings, disability, and much more.
Have you tried this yet?