To make this reply short not to derail this thread.
The world's oldest and most advanced ancient civilizations, cultures, cities (the oldest continuously inhabited cities in the world are located in the Arab world for a reason) are native to the Arab world and we modern-day Arabs are descendants of the people who inhabited and founded those civilizations and cultures as confirmed by every genetic study conducted. We similarly share a shared geography, a shared ancient Semitic heritage and a shared cultural and linguistic continuation.
By all means if any people alive can claim those ancient civilizations and cultures native to OUR lands, it is modern-day Arabs, its descendants. Nobody else. Similarly people of Pakistan are the only ones that can and should lay claim to the IVC.
Secondly what you are writing is simply not true. The ancient Arabs were a sedentary civilization that created numerous World UNESCO heritage sites in what is today Yemen, Oman, KSA, Bahrain, Iraq, Syria, Egypt (Sinai), Palestine, Israel, Jordan etc. to name a few countries. Sites such as Petra, Mada'in Saleh, Palmyra, Hatra, Bosra , 1 of the 7 wonders of the ancient world (The Great Dam of Marib) and the list goes on. Arabs were widespread all over Arabia (not all of it), all over Sham (not all of it), Mesopotamia (not all of it), Egypt (not all of it) millennia before the birth of Prophet Muhammad (saws).
Arabs have an almost 3000 year old recorded history in Syria (853 BC). Arabs were first recorded in what is modern-day Northern Syria (853 BC) during a battle between the Assyrian Empire (itself a Semitic empire) and various allied Semitic city states and entities.
Assyrian and Babylonian Royal Inscriptions and North Arabian inscriptions from 9th to 6th century BCE, mention the king of Qedar as king of the Arabs and King of the Ishmaelites.
[90][91][92][93] Of the names of the sons of Ishmael the names "Nabat, Kedar, Abdeel, Dumah, Massa, and Teman" were mentioned in the Assyrian Royal Inscriptions as tribes of the Ishmaelites. Jesur was mentioned in Greek inscriptions in the 1st century BCE.
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The Ghassanids ruled Syria for 4 centuries prior to the Rashidun. The Nabateans ruled half of Syria over 2000 years ago. Philip the Arab, an Arab emperor, ruled the Roman empire 400 years before the Rashidun.
Queen Zenobia, an Arab queen, ruled the ancient city of Palmyra. Half of Sham and Mesopotamia is geographically and historically a part of ancient Arabia.
Anyway all modern-day Arabs are all racially the same people, we share the same geography (you can walk from Oman to Morocco and never leave a single Arab country), we share the same pre-Islamic Semitic past consisting of closely related peoples, civilizations, cultures (since recorded history began) and we all adopted an Arab identity Not to mention that we were/are all Semitic and racially the same people.
All people adopted an identity at one point in time, what matters here is that all Arabs are native to the Arab world and of the same racial stock and mostly Semitic peoples. Arabia was Arabized as well that does not mean that previous history was erased or that foreign people suddenly from the other side of the world suddenly replaced the locals or fell down from the sky.
https://defence.pk/pdf/threads/ancient-civilizations-empires-kingdoms-of-the-arab-world.385937/
Not only the Egyptian civilization, brother. Several well-known civilization native to the Arab world are a mystery to this day for numerous archeologists and scholars. Not to mention recently discovered civilizations and cultures. Even though the history of the Arab world is the oldest recorded there is, due to those very same findings, we only know a tiny percentage of the region's and the world's overall history. Arabia for instance is a largely unexplored region in that regard and due to its sheer size, key importance in ancient human migration and being the oldest inhabited region of the world outside of Eastern Africa, is key to understand early human migrations.
Anyway to return to the topic of the thread.
The oldest rock art in the region (world) depicting the predecessor of the Arabian horse has also been found in those areas of KSA. So another of the many archeological clues.