FWIW, the usual US style for foreign leaders is to drop all titles other than the principal on the first use, last name on the second; so "PM Starmer met King Charles today to form the government, although Starmer and Charles' conversation will not made public"
"Today Prime Minister, Sir Kier Starmer, met with King Charles the Third, by the Grace of God, of the United Kingdom of Great Britain and Northern Ireland and of His other Realms and Territories King, Head of the Commonwealth, Defender of the Faith, to form a government. The meeting between ..."
Oh, just finished harvesting the tea leaves, sugar cane, and wheat that I planted when they started saying the whole title. Let’s see where they are….
“… of The Neat Rock, Keeper of the Sacred Seal of Wyzcymk (not stolen), World Champion in …”
Oh, I have time for a nap before milling the flour.
Dictators too, such as His Excellency, President for Life, Field Marshal Al Hadji Doctor Idi Amin Dada, VC, DSO, MC, CBE, Lord of All the Beasts of the Earth and Fishes of the Seas and Conqueror of the British Empire in Africa in General and Uganda in Particular
I made a prop piece of sheet music for Anne of the thousand Days, and it was written by Henry VIII. I made the title the smallest thing on the page, Henry's name the largest, and the rest was filled with his titles and honors.
I knew I had done good.