Wardley maps (by Simon Wardley) have been in for a while. I have attended a session too by Neil Killick in Melbourne (shall upload the slides / snapshots).
https://blog.gardeviance.org/2015/02/an-introduction-to-wardley-value-chain.html
https://blog.gardeviance.org/2015/02/an-introduction-to-wardley-value-chain.html
