Conditionally Detecting Invisibles with True Sight - Impossible?

There are several ways of detecting invisibles. Currently I am interested in the true-sight kind. Although my experiences have shown that it is impossible to make any kind of True Sight detect some "kind" of invisible units but not others, I thought it would be worthwhile to see if anyone knows some magic trick. So the question is:

Are there any kind of True Sight ability or trick that can detect one invisible unit yet not detect another invisible unit? How to achieve it is irrelevant. If two units can be within the range of a unit with a True Sight ability of some kind and only one of them is revealed, then that is a solution regardless of what those units are.

I ask mostly for performance reasons, as it is easy to make a custom system that adds/removes invisibility through triggers to units, but doing that periodically (such as to emulate True Sight for a unit (or several units)) is extremely taxing on the CPU.

It seems to me that, with the release of TFT, there were two distinct kinds of invisibility planned, and those are outright invisibility and the state of being "burrowed". If you look at abilities like the gyrocopter's truesight, you'll probably see an option to detect burrowed, invisible, or all units.

Whether this is practical for your purposes, or whether there actually ever was an implemented difference between invisible and burrowed, I am not sure, but I offer it as an avenue to explore.

I think this distinction between invisibilities was never fully implemented and doesn't work right. Other than the solution you proposed yourself, I don't think there's a way to do this.

My (and others) experiments with truesight has to my knowledge never managed to differantiate between any kind of invisibility, including burrowed. Since this is a question in which I actively presume no-one can give a working solution, you can in turn assume a simple suggestion like that does not work unless you yourself know better.

It's as Anitarf said, as if the two kinds of invisibility were never implemented.

I wonder if it's the truesight ability itself that doesn't discriminate between different kinds of invisibility, or if it is the unit's themselves that only gets one kind of invisibility - or both. Maybe Blizzard implemented half of it, and not the other. In any case, I'll assume it is impossible for now.