List the empires of the Middle Ages. Which of them survived by the end of the 15th century?

If from east to west:

Empires in China: Sui, Tang, Song, Yuan, Ming. Only the latter survived until the end of the 15th century; the Portuguese sailed to its southern shores in the first third of the 16th century.
The empire of Tamerlane, after his death, became known as the “Empire of the Timurids”. Its core was the Persian lands, which fell apart at the turn of the 15th and 16th centuries.
Ottoman Empire. At the turn of the 15th-16th centuries, she controlled territories from Bosnia to the eastern part of Turkey (Trabzon).
Holy Roman Empire.
Byzantium. It existed until 1453, although for the last 50 years it occupied a small area in eastern Thrace.
Empire of Genghis Khan. By the end of the XIII century, it was divided by his heirs.