Noice.That's quite the array!
I'm following your logic right along. The 288s and 312s will provide you with a problem solving opportunity which seems you are already aware of :/ , but the 132s should play much better and might work just fine with the 312s without adding in any additional resistance.
Those 288s are the oddballs of the bunch. If you were not going to split up the 2 types of boards, 312s & 288s, on different drivers, then you'll have to add in components to manage the cct. A few options too consider would be additional resistance added to the lower V string/board, additional zener's added to string/board, a combo of the 2, additional 12v supplemental strips, or a linear regulator cct is pretty easy to build.
There will be ~12v drop you'll need to calculate for and the interface will have to be rated to pass at least ~5.5A. That's a ~66w energy dissipation that's occurring at that interface which means that the (2) 312 boards will require 66w more than they normally would to operate in that cct, so its very inefficient. It also means that the interface will need some heatsinking. If you decide you still want to go that route lmk. I'd recommend using a linear voltage regulator, something like the LM338 if you decide to go that way, but would ultimately recomend splitting them up. The lm338 will have to have additional parallel circuitry or a few wired in parallel to effectively manage the load through itself as well. Lol it can be done but it would require a bit of fine tuning and will cost 66w more to power the 312s at 200w than it normally would. It would take 266w to run 200w at the 312s using some sort of regulator.
^^^All the numbers I'm using are ballpark guesses (but should be fairly close) as there is still some ambiguity in the components, the 5.5A, the 66w, ect, that's why they have "~" in front of them. But a +/- here or there will still result in the same principle of action and explanation.
Adding in 12v supplemental strips might be nice. You could add in deep red or far red 12v strips and not waste any of the 66w on heat like if using the regulator. You could put that V drop to use lighting up red diodes instead of just expelling as heat in the regulator.
The 312s and 132s are going to be much easier. I'm not sure if anything will be required, but a low Ω POT wired in series with either set will mitigate any issues that come up if they do. You can adjust the 2 types of boards' V's with infinite variability using a POT, which means precision tuning. You'd just have to use your multimeter and adjust the POT to equalize the V's between the 2 types of boards.
Good luck lmk what you decide, I'll be checking in periodically.
