Friends. Some people are more amiable than others, and make lots of friends. Also, they often use the term loosely. I, personally, make a distinction between my acquaintances: the people I interact with regularly and on good terms, and my friends ie the much smaller group of people whose company I actively seek out because I like them. But perhaps not everybody makes that distinction.
Best. This surely represents a small, select group. If you class more than (say) six people as your "best friends", I would suggest that one or both of those words are being misapplied.
Some. This is an indefinite term; it implies that you don't know the exact number. But if (say) two of the six people you hang around with most belong to a different race, you wouldn't say, "some of my best friends"; you'd say "two of my best friends".
|The author and visitor, 1973|
Can you guess which is which?
And me? Well, during my early 20s I belonged to a club for young adults one of whose most popular members (and popular with me) was half Aboriginal. I then moved to a residential college where approximately a third of the residents were exchange students from Africa, India, southern Asia, the Middle East, and the Pacific Islands. I got on very well with all of them, and with some I became firm friends. Alas! We have all since gone our separate ways. However, I shall always treasure their friendship, and would be delighted to re-establish it should the opportunity arise.
But right now none of my best friends belongs to a minority.