I am now in my free period again at uni and so ill put more time into finishing the retrofit kit, when i happened to learn a crucial detail; backlight LEDs need to have a property known as high CRI, or, color rendering index. the meaning is self apparent, and likely is the overall balance or spread of spectrums that make up the white. I asked grok to help me find specific models of LEDs actually used in backlights so i could figure out if maybe a specific thing is needed, and while CRI might not be that key thing, it is nontheless critical, really though i was hoping to reverse engineer some sort of profile, or just outright buy a SMD roll of actual monitor lights, because they would also be suitable for the operating conditions, but if it gave me a clue for sourcing the ideal LED then, that would be a bonus.

Anyway i didnt find actual model numbers, LEDs are pretty hard to find that way, at best you can go to a specific manufacturer and just search what they have, a part number is ultimately just maker + dimensions and thats it. the rest is handled internally, and you usually cant search specific full-model identifiers from anywhere, much less google.

An added benefit of high CRI LEDs is while generic SMD LEDs might still have traces of yellow from diagonal light out of the phosphor gel lens (they are blue LEDs under a yellow phosphor to make white for those that dont know), high CRI LEDs by design cannot risk any distorted emissions like that and would reliably have eliminated them. I wasnt too worried actually but i feel better realizing i dont even have to think about it at all.

Fingers crossed as i search through options i encounter ones that actually state in the datasheet they are used in TVs and such.
Once i finally locate some ill go to a PCB maker and see if i can get a big board of 10cm lengthed strips i can connect end to end and just snap apart, another thing ive realized from initial results is there are super long form factor LEDs which are always applied spaced very far apart, so i might not need a high sensity strip where the segments need to be bridged by LED, a simple jumper might do if 5-6mm gaps between LEDs are fine thanks to their beam angle.