I've been trying to put together a list but that is the exact problem.I think that a problem you are going to see is that many aftermarket turbo makers who make "hybrid" turbos won't want their specs released or don't give out that information because then other people can copy it. You are best making an estimate of how much power it will make with approprite supporting mods.
Yes, that adds to the difficulty of getting specs. It's best to contact the vendor directly to see what supporting mods you need and compare. This list is just so one can quickly see what's out there.Don't forget that a lot of these mods are by trial-error engineering. That's not necessarily a bad thing if it produces a good product that ends up being a retail product but in thoses cases you won't have a flow chart, you might get a CFM estimate, but you should have at least the wheel sizes. The tweaks to the housings will also effect things. And of course tuning makes a big difference too.