What about "redlist" and "greenlist"? The association between "red" and "stop", and between "green" and "go", seem more arbitrary than the associations with "black" and "white" but almost everyone in the world is familiar with traffic lights. (And the inhabitants of the North Sentinel Island probably don't need to configure mail servers or whatever.)
What's your objection to "allowlist" (or "golist") and "denylist"/"blocklist"/"stoplist"?
It's not often that we have an almost universally better alternative, but at least to me it seems like this is the case here. (Yes, allow/deny have one syllable more each, but I think we'll live.)
I'm aware that many languages don't distinguish blue and green, but English does distinguish them and we're talking about English terminology here. (Apparently in Japan the green traffic lights are officially allowed to be slightly bluer than in other countries because the word they use for them includes blue: an interesting case of language changing the world.)
I don't like "allowlist" and "denylist" because they sound wrong to me: perhaps because the first element of a compound should be a noun, not a verb, but that's just an attempt to explain what I feel. I don't like "blocklist" because that sounds like a list of blocks, something in a file system. Of the ones you mention, I think I'd probably prefer "golist" and "stoplist", which I hadn't really considered before. They're also shorter than "allowlist" and "denylist".
According to the Oxford English Dictionary, the term "stop list" has been in use since 1920, but "go list" is not recorded.
Red and green mean stop/go but only in a narrow context. I would have no idea what redlist and greenlist means. Red and green also bring to mind Christmas and Martians. Red means communism, green means environmentalism. Green means money, red means a negative entry in your account. There's a lot of culture-specific meanings too. Red in China is associated with good fortune and happiness.
