How about a picture of the other side?
A picture is worth a thousand words.
In the picture your showing currently.
I see chip dies as consolidated into as small a surface area as possible. What goes along with that minaiturization is short connections. As in. Shorter gold wire lenghts used to connect the actual die to outside surrounding circuitry. The actual die doesn't have the gold. It's the connecting circuitry to bring it's computing power to the outside world.
Intuitively. That is High Telecom due to chip density and low profile and no metal.
But. I would email Boardsort. To get the final say.
I would upload that picture 2 or 3 times to O.S.C.A.R. See what it determines.
O.S.C.A.R. is only a guide and not a final evaluation. We know that.
The hash board is a dedicated purpose PCB. It may someday deserve it's own category like RAM. Why?
Bitcoin mining will see it's end. Only so many coins available. Rumour is 10 to 15 years. When over with. Should be a E-scrapper paradise.
Can you imagine that!!!! Unless of course everything is repurposed. Which I highly doubt.
I appreciate your subliminal humour there Meowpher the 10th.
Good luck.

There’s also the move towards transactional and storage tokens that will eventually surpass bitcoin in general use.

Mining in general is unlikely to go anywhere anytime soon. The coin and crypto wikis both list over 500,000 different coins and tokens.

That said miners don’t last very long.

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Thanks for the tips. I'll try the heatgun, and continue some of the freezer chilling. By the way, Chris told me that with the sinks on the board, it is midgrade all the way. Remove the heat sinks, and he said it would be $1.50 per pound. That is less than I had hoped for, but in disassembling the units, I discovered each unit has 3 hashboards, so that is a little over 3 pounds per device, so puts the board value up to $4.50 per unit, with a high peripheral board, two pounds of clean extruded aluminum, which will bring another $1 There is a cooling fan on each end, which can be removed by taking out the fou small screws in the mounting steel plate (negligible weight, and a few ounces of insulated copper wire. So the total should be $6 or $7 per unit.