We have two options here.
Option #1: Include all organisms that are "alive" by some definition at two points in time (A and B) are alive at any point in time between A and B.
This eliminates all definitions that exclude known states for organisms. Which is most of them. All five "life processes" can be suspended in most/all organisms for indefinite periods of time. Since they are indefinite, you cannot assume any finite span of time being involved and therefore it is not the possession of properties that matters, only the potential for possession.
In fact, everything has to be written as potentials, in this model. There is nothing in this model which states that any feature has to exist simultaneously with any other feature.
Option #2: Abandon all notions of "life" entirely and go from the ground up.
There is fundamentally no distinction between living and non-living. All matter is "non-living", any concept of "life" has to be an abstract, non-physical concept that isn't binary but a gradation. In other words, it's not a property something has, it is a magnitude of a property of a collection of properties that something has. This model is necessary if you adhere to the deep oceanic origin of life theory. In this model, life formed in the deep oceanic trenches from an iron/sulphur matrix around which organic molecules (some sinking from the surface, some formed at the trench level) were bound. Since there is no binary living/non-living state in this model, this proto-proto-life must have a non-zero magnitude. (It is clearly more than the non-living structures around it, since it is a gateway to life, but it is clearly less than anything we'd classically consider "living".)
I would argue that in this model, anything that meets the classic five life processes meets or exceeds some threshold boundary, which you are entirely at liberty to call 1.0. Quasi-living things cannot equal or exceed this threshold value, definitely living things cannot fall below it. Furthermore, since all known living organisms contain processes that are critical to the function of the organism and which must have evolved at some point (something only living systems are capable of), all sub-processes of any living organism must have non-zero life, no matter how simple. (In computing terms, if you only have a notion of programs, then threads, procedures, functions, etc, are program-lites but still programmatic in nature.)
You will notice that in neither of these have I actually specified what a living organism must possess. In the first case, there must only be potentials for processes that are counter-entropic, but there is no formal description of what those processes would be. I don't need them to define life, I only need to know that counter-entropic behaviour of some sort is a non-zero possibility. In the second case, I don't even bother considering entropy. It is sufficient that there be a process which, by stepwise refinement, can be shown to be a valid sub-process at some depth of analysis of life. It simply doesn't matter if it organizes into something that is living in some sense we don't know about, just as in programmatic terms you don't care what links to a library file. If it contains some identifiable sub-process that has the potential to be a key part of a living thing, then it has non-zero life and whether that life meets some criteria or other can be left to biologists and philosophers.
These are, in my arrogant opinion, superior to classical definitions because I'm not looking at a specific something and calling it a benchmark. Which, from the perspective of early science, meant humans. If you like, I'm looking only at the fundamental specifications involved and saying that if there is non-zero overlap and that overlap is necessary (but not necessarily sufficient) for life, then whatever possesses that overlap possesses enough to be considered on the spectrum.
I accept, completely, that this still doesn't guarantee covering everything. It does cover ALife and AI (provided that there exists a mapping that could, in principle, be used to convert physical life into ALife and vice versa), but it doesn't cover Isaac Asimov's speculation of silicon lifeforms unless there is a key component of the biology of such life that mirrors the biology of known carbon-based life. Just one component is enough, true, but a totally xenobiological system which has zero correspondence with known systems would not be recognizable by these approaches.