Re: Confusing mess
You're mistaken.
OpenJDK is the open-source project used to develop the Java SE platform.
It never became Adoptium, that was AdoptOpenJDK, which was a distribution of OpenJDK (think Linux and Ubuntu). AdoptOpenJDK was moved to the Eclipse Foundation, where it became Adoptium (it had to because of trademark infringement). That is now the overall project, of which Temurin is the name of the distribution.
Simple!