Who were the Ammonites in the Bible

What do you know about the Ammonites in the Bible?

The Ammonites were the Neighboring people of Israel who were said to have descended from Lot, Abraham’s nephew.
“When you come to the Ammonites, do not harass them or provoke them to war, for I will not give you possession of any land belonging to the Ammonites. I have given it as a possession to the descendants of Lot.” DEUTERONOMY 2:19
Often it is the people closest to us who are the hardest to get along with. The Ammonites and the Israelites were no exception.
The Ammonites were a people group descended from a man named Ben-Ammi, who was the son of Abraham’s nephew Lot (Genesis 19:38).
They lived on the eastern border of Israel, just south of the Jabbok River.
They had occupied their territory before the Israelites came up from Egypt to live in the Promised Land of Canaan. The Lord specifically instructed the Israelites not to take any Ammonite territory as they claimed other land in the region (Deuteronomy 2:19).
The Ammonites’ relationship with the Israelites was one of almost constant tension and sometimes even outright aggression. The Law of Moses forbade any Ammonite from entering the tabernacle area (Deuteronomy 23:3). The Ammonites took part in several alliances
against Israel during the time of the judges (Judges 3:13; 10:7; 11:4), and they continued to attack Israel during the reign of Saul (1 Samuel 11:1).
David eventually brought them under the rule of Israel (2 Samuel 12:26–29), but they regained their independence after Israel split into two kingdoms. Various Israelite kings continued to struggle against them (2 Chronicles 20:1; 26:8; 27:5). The Ammonites remained a source of tension even when the Babylonians and Persians ruled over both the Israelites and the Ammonites (Nehemiah 4:7–8; Jeremiah 40:14).
The Ammonites worshipped the god Molech, who was often associated
with child sacrifice (Leviticus 18:21; 2 Kings 23:10; Jeremiah 32:35).
The Israelites were often guilty of worshipping this god as well.
The capital of Ammon was Rabbah, located at modern-day Amman.
After the city was conquered by the Greeks, it was renamed Philadelphia and listed among the cities of the Decapolis.