First point to make is that the vast majority of Asian WLs do not like Indian* and Arab customers.
That's just the way it is, and there is no point trying to be politically correct about it.
Regarding Asians and Westerners, well the vast majority of Asian WLs are OK with either one, with most preferring Asians.
Generally most Chinese and Korean WLs prefer Asians but are usually OK with Westerners too.
Japanese and Thai WLs seem to be OK with both, and some prefer Westerners.
But there are plenty of exceptions of course.

As for the reasons for these preferences and whether they are justified or not, that's a whole different story.

* by "Indian" the Asian WLs mean the whole sub-continent (Indian, Bangladeshi, Pakistani, Sri Lankan, Nepalese etc). They are all the same to them. And they definitely do not see them as being Asian even though the sub continent is geographically part of Asia.