Benadaris are neither arabs nor persians, you are from Kerala and Pakistan and most likely arrived around 16th or 17th century. Go take a DNA test if you don't believe me. Genetics alone can disprove everything you've saidEthnic Somalis weren't urban people that resided in stone towns with buildings only with Arab and Persian architecture, Arabs and persians lived alone on the coast in their own settlements.
In barawa region tunnis were agro pastoralists who prefer pastoral life over urban life they lived in the outskirts of the stone town of barawa although later when they were urbanized they settled in areas adjacent to biruuni and mpaayi.
Ajuran first came to xamar after the fall of their empire , 4 out of the 8 moorsho clans in xamarweyne claim ajuran waalamoge ;
1-Reer Maxamud Eebow
2-Reer Baatay
3-Reer Ibrahim
4-Reer khalafow.
Moorsho is a confederacy named after the neighbourhood which all 8 clans/families reside in.
In the stone town of Marka, the first hawiyes to settle there were a group known as juunji they came around 300 years ago, they're blacksmiths from Hiraab.
Mogadishu, Marka and Barawa were all established by Arabs and persians, no proof of ethnic Somalis or remains of them wether it's graves or masjids built by them or neighborhood or even architecture.
Also historical texts refute what you say, many ethnic Somalis were traders, craftsmen, and scholars and were described as such from the 11th century on wards. There were many Somalis in Harar who travel back and froth from Xamar as well. Eyl and other port cities are well documented settlements that similar stone buildings to Xamar, these cities were there since the time of the Roman trade network
Not all ethnic Somalis were nomads, if they we were, we'd be a total pastoralist society that had zero involvement with trade and crafts.