No offense meant, but I think we're a bit unclear on your goals here, and it's hampering our ability to assist/communicate our points.
You say you want "full osc sound," but I'm not sure that's how I'd describe the "neanderthals destroying atlantis" example you gave. I agree with @ku14 that if this is the sound that you're after, than there are far cheaper and easier ways to achieve it than a bank of sound sources, even if you want to do it with modular synths. From your responses, I also wonder if you've had much opportunity to play around with a modular system, because once you start patching you'll realize why having a system of all oscillators and no modulators or vcas actually kind of sucks (and is potenitially unusable), as @progspiration mentioned. So, a few thoughts and questions.
First: are you actually planning on purchasing any of these modules, or are these a thought experiment? Our advise changes if you're thinking of putting real money down (and this collction would constitute quite a lot of it). If this is a thought experiment, sure, happy to entertain, but if you're really aiming to get that sound and have some money to spend, I think you'll find there are better ways. We'd rather you learn from our own GAS mistakes than by putting a pretty penny down on a system won't do what you want.
Second, you ask us to consider each of these instruments as "a standalone instrument", but suggest you want them to work harmoniusly as a 4+1 instrument played by several players. What's your actual aim here? As standalone instruments, these simply don't work, but if you are actually thinking of this as one big rack broken into four parts plus an extra rack for mixing... ok, well, then there might be something to work with here, if you're open to suggestion and there are patch cables long enough. We can't forget the realities of patch cable length when planning your musician staging.
Third, have you tried VCV Rack or Voltage Modular before? Great free/cheap ways to give this stuff a try. Once you have, you'll know that it takes a lot of parts to make the system go, and even more parts to affect musical changes. Unlike a complete synth voice, think of modules as a synth exploded into parts. Yes, you can take just the oscillators and hook a bunch together in a rack, but the synth really needed those other circuits to make the oscillators do anything other than put out raw unfiltred tones.
We'd love to assist, but I think I'm just confused as to what you're seeking. Also, please no more Claude. My eyes can't handle the formatting of the chatbots.
Cheers and best of luck!