Been a while since I’ve seen stuff like the top two. While boards like the top one will normally fall into peripheral: exceptions exist for certain boards known to boardsort. This is such an exception. The board has a heavy copper layer among other high value items. This will be low telco.
The second board is just shy of making backplane. Leave the chip in the socket for low telco.
The last one is a standard panel board. It just barely makes it into peripheral.
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