That now leaves me wondering why there are two LM75 devices adjacent to each other.
There aren't, and tolip_wen already told you what the other was.
Please forgive me for just answering the fucking question that was asked.
One is an
LM75
(closer to PCIe)
other is
24C32WP
k348k
It's the i2c EEprom
YMMV
