Caliphates as in Arab (Arabian and Hejazi to be precise) imperial dynasties (Umayyad and Abbasid).
That was mostly purely the work of Arabs (Arabians) from modern-day KSA (Hejazis) and Yemen (Hadhramis) mainly.
en.wikipedia.org
Same Arabs that created numerous sultanates, kingdoms etc. in South East Asia. From modern-day Malaysia, Singapore, Indonesia, Philippines to Brunei.
The current Sultan of Brunei is for instance o Hejazi Hashemite ancestry.
en.wikipedia.org
Numerous Muslim dynasties in South Philippines (Mindanao) etc. as well. Including the Sultanate of Sulu that ruled for almost 500 years.
en.wikipedia.org
A few of the current Malaysian kingdoms are of Arab origin as well.
Arabs owned almost all of Singapore not long ago.
Quite a few former Indonesian Muslim dynasties of Arab ancestry as well.
There are around 10 + million people of Arab ancestry in South East Asia.
Even an Arab origin Sultanate in Borneo.
en.wikipedia.org
Last Sultan (until 1978):
en.wikipedia.org
I could go on.
Arabs left a lot of linguistic, religious, cultural, culinary, architectural, musical etc. influence.
Also the reason why most (almost all) Muslims in South East Asia (close to 350 million people) are mostly Shafi'i Sunni Muslims (main maddhab of Hejazis and Hadhramis traditionally).
Same thing with the Hui who were/are partially of Arab origin as well and have their own Arabic origin alphabet.
As for those battles - just a reminder - at the time Arabs controlled one of the largest empires in history (the largest in history back then) spanning almost 15.000 km from west (France/Spain/Portugal in the West) to modern-day Western Xinjiang/Eastern Central Asia.
It is absolutely stunning that such battles even took place given that Arabs defeated/took on 4 of the strongest empires within a very short time period (Byzantine, Persian, Frankish (strongest Western European power) kingdom/empire, Chinese Tang empire and everything in between. While facing (often) internal Arab-Arab conflicts.