common lisp is the most practical- its an industrial strength application language, gradually typed, very fast it even includes the most complete oop system kn

common lisp is the most practical- its an industrial strength application language, gradually typed, very fast it even includes the most complete oop system known to man which you can completely ignore if you want to and it'll still be the best choice not that complex either, maybe halfway between lua and python? there are some rough edges, which comes from being powerful and unopinionated, but they are trivially papered over as you work