Shane Hadderton, 36, Marvin Usher, 33, and Deividas Fiodorovas, 36, were all sentenced on Thursday at Chelmsford Crown Court.
Oscar-winning actress Jamie Lee Curtis and her family are pledging one million dollars (£812,000) to start a “fund of support” for those affected by the Los Angeles wildfires.
The former health secretary apologised to the victims’ families at the Thirlwall Inquiry into Lucy Letby’s crimes.