Alfred Hitchcock's adaptaton of "Juno And The Paycock" had the original Juno from the Abbey Theatre production reprising her role, and also original cast member, Oscar-winner Barry Fitzgerald in a different (smaller) role.
However, your research into Fun Home led you to a decision - so why not repeat the process with the other shows you mentioned? Look up their websites, reviews, YouTube clips etc. or else consult the list of currently running shows on this very website and see what appeals to you. Simple, really.
I get your point - but even in medical terms the word is outdated, and is being phased out. "Idiot" was also medical terminology at one point!
The diagnostic term 'mental retardation' is finally being eliminated in the upcoming international classifications of diseases and disorders. The term 'mental retardation' was introduced by the American Association on Mental Retardation in 1961 and soon afterwards was adopted by the American Psychiatric Association (APA) in its Diagnosti