Earlier quoted context omitted.
There was also beanshell if you remember, of course never as polished nor adopted like groovy but it was also fun to use.
Is groovy actually really "adopted" much of anywhere? I feel like for 99% of normal people, their only real exposure to it is as the DSL of gradle and jenkins. I can't imagine writing anything of substance primarily in groovy.
That's solely based on a poor imagination, not trying...