Conaway from "Taxi" and Taylor from "The Cosby Show" died in May. Lesser, who had recurring roles on "Seinfeld" and "Everybody Loves Raymond," died in February.
E! News said representatives for the Emmy Awards show declined to immediately comment on the trio's omission from the Sunday night tribute but said they would address the matter Monday.
Celebrity Breakups and divorces of 2014 [PHOTOS]