I think what you mention with ISFJs is something we'd call
Schwarzmalerei - at its worst, that is. I know a few ISTJs who are like that. They imagine the worst possible outcome based on their experiences so they couldn't possibly be disappointed and are prepared should this worst case come to pass. There is a relatively fine line between this pessimistically preparatory way of thinking and having it develop into depression, because the more habitual this thinking becomes the more likely it is to slip into believing it couldn't go any other way.
It may be similar to what
@Deleted member 16771 mentioned with Practiced Negativity, only that their functional stack sort of automates this process.
I'm not sure if in this case it is so black-and-white (but I know what you meant to get at, I believe), I mean, Ne intuits a range of outcomes, but being in the inferior slot, you could imagine it like the function getting less brain power while Si is saturated with it, so the range of outcomes it can imagine is smaller. It then depends on the attitude of the person (which is most likely based on the experiences they have made) what this range looks like.
If they were fixated on one single outcome, it could indicate that they are ruled by the shadow Ni, which in turn might place them fairly low within an imaginary emotional health scale.
I can imagine that it would take another function to short circuit the spiral of pessimism by feeding new information, like attitude (Fi, or Ti), present situations as new experiences yet uncategorised (Se), or renegotiating preconceived notions with new information (Fe and Te). Theoretically, this could be applied to any type, with the right combination of factors.