Russia won to develop a steam catapult by himself at 1990 or faster.
Russia could equip steam catapults on aircraft carrier Admiral Kuznetsov.
But by political decision to save building costs, Admiral Kuznetsov had a sky-jump deck instead of steam catapults.
Russia planed that the next carrier equips steam catapults, but the next carrier herself was canceled.
France uses steam catapults on Porte-avions Charles de Gaulle, but those catapults are not developed in France.
They were imported from USA - Type C-11 catapults.
And old Clemenceau also had steam catapults, they were imported from UK - Michel Brown Type BS5 catapults.
Brazil's São Paulo was bought from France , so she is Clemenceau class, her catapults may be UK - Michel Brown Type BS5.
Or... maybe... changed to USA - Type C-11, it's only my imagine.
Now... USA and UK are working to develop new Linear motor catapults for USS Gerald R. Ford class and HMS Queen Elizabeth class 's second ship HMS Prince of Wales.
The first ship HMS Queen Elizabeth will have no catapult - new Linear motor catapults will not be able to develop in time. And planned STOVL airplane F-35B is very very slowly developing , it causes HMS Queen Elizabeth class's trouble. HMS Queen Elizabeth will carry only helicopters, no airplanes.
HMS Prince of Wales will carry F-35C and will be used at CATOBAR.