Oddly enough, I can't find a list of speakers for the Kennedy funeral. It was a mass, so perhaps there were fewer speakers. It's hard to determine, from the articles I see, who spoke at the mass and who just "issued statements" or the like. My impression of the funeral is that Jackie did indeed want it tightly staged for maximum dramatic impact... too many speakers would detract from that, I suspect. It doesn't look like there were too many, that's for sure...
Kennedy funeral
In the Rotunda, the speakers were Mike Mansfield, Senate Majority Leader; Chief Justice Earl Warren; and Speaker of the House John McCormack.
At the funeral Mass, the main eulogist was Father Hannon of the Archdiocese of Washington, then a young JFK of the Church personally selected by Jacqueline Kennedy.
Oddly enough, LBJ was not invited to speak at any of these events; he did lay a wreath at the casket for the nation in the Rotunda.
Bobby Kennedy and Ted Kennedy were scheduled to speak at the gravesite but declined at the last moment.
I don't recall many speakers..remember a lot of the country was still in shock at the idea of "President " Johnson..