|The 13 main categories of denial (dis-belief) and belief, as listed on the atheism types by denial and belief page, for historically-famous atheists, that one has to have "strong" opinions on, is one is to be considered as strong atheist.|
In 2015, Libb Thims was listing, in the atheism types by denial and belief page, the categories of: achristism, mortalism, abioism, asoulism, aspiritism, moralism, determinism, dualism, and monism, as the ten main -isms one has to have "strong" opinions on, along with that on the topics of: purpose, chance, and free will, if one is to be ranked as a "strong atheist", in modern terms, historically speaking.
The following are related quotes:
“Libb Thims is a strong atheist, adheres to a physics-based morality, and considers himself a Goethean revolutionist.”— David Bossens (2013), Debates of the Hmolpedians 
1. Bossens, David. (2013). Debates of the Hmolpedians (Ѻ). LuLu.
● Strong atheism – Conservapedia.