I’m a native English speaker, and to me “unusual causes” and “non-standard causes” feel similar in connotation, and neither strikes me as feeling deprecating. Though I can see how “unusual” could imply the cause is weird, whereas really we just want to say it’s not usually discussed. “Non-standard” avoids that, but seems like an uncommon phrase.
I’m against “under-discussed”, as that bakes in the judgement that this should be more discussed. I’d say the same about “Overlooked” or “Neglected”. “Less discussed causes” or “Less commonly discussed causes” avoids that, but is perhaps a little long (though the former is only as long as “Under-discussed causes”).
I’m a bit against “other causes”, though I’m less sure why. Maybe “other” actually feels more deprecating to me, which is maybe in turn because I’ve been exposed to the term “The Other” in some social science courses.
I’m a native English speaker, and to me “unusual causes” and “non-standard causes” feel similar in connotation, and neither strikes me as feeling deprecating. Though I can see how “unusual” could imply the cause is weird, whereas really we just want to say it’s not usually discussed. “Non-standard” avoids that, but seems like an uncommon phrase.
I’m against “under-discussed”, as that bakes in the judgement that this should be more discussed. I’d say the same about “Overlooked” or “Neglected”. “Less discussed causes” or “Less commonly discussed causes” avoids that, but is perhaps a little long (though the former is only as long as “Under-discussed causes”).
I’m a bit against “other causes”, though I’m less sure why. Maybe “other” actually feels more deprecating to me, which is maybe in turn because I’ve been exposed to the term “The Other” in some social science courses.
My vote might be for “Less discussed causes”.