In all candor, higher-end photographic applications are a relatively new/niche application compared to general lighting, and the marketing of emitter products toward such doesn’t seem to be very well developed at this point. To be fair though, lighting-class LEDs worth a bleep are only about ten years old at this point, and it’s only natural that it would take some time for the industry to react to the more subtle challenges accompanying their advent…
Cree and Bridgelux are the only major players I’ve found touting 95+ TLCI values, though at this point I’m only finding that represented in the form of an orderable part number listed in a datasheet from Cree. That doesn’t mean that other suppliers can’t do the trick, just that those folks seem to have taken notice of the issue and made steps toward addressing it. Luminus also seems to have noticed, but are only speaking of TLCI >90 at this point, from what I can see.
Personally I really like the CoB format; yes one does have to deal with the higher thermal density and the optical control probably isn’t as good as it might be if each die had its own personal lens, but the convenience of driving two screws and poking in two wires to affix and connect 20-50 dies is hard for me to ignore.
As for flicker, that’s often an artifact of people trying to meet power factor targets on the cheap. Constant-current drivers designed & specified for reduced flicker are a thing, though there are a lot of solutions out there for rolling one’s own current controller, which might offer potential for better performance as well as allowing use of a more fungible silver-box power supply.