The Night of Too Many Stars — a benefit show for nonprofit Next for Autism that was part of this year’s Netflix is a Joke lineup — lived up to its name on Thursday night, bringing out an impressive string of A-listers for an evening of music and comedy.  Jon Stewart served as host for the night, which got off to a fast start as Kevin Nealon drew a portrait of a woman from the crowd and Jimmy Kimmel (on the bass clarinet), Conan O’Brien (on the guitar) and Stewart (on the drums) jammed out on stage with Love on the Spectrum star Abbey Lutes.  The program alternated between stand-up sets — from comics including John Mulaney, Bill Burr, Leanne Morgan, Ron Funches, Nikki Glaser, Matt Rife and Ali Wong — and bidding on some very exclusive items, all in the name of supporting people with autism and their families. The benefit has been a longtime staple on the New York event calendar and took place in L.A.…