Wow, you have an awesome rig, with high density and only 5 GPUs with 562 Mhs
The memory temps are also awesome, but the only thing I would adjust in your rig is to decrease the fans speed
Maybe 80% will be enough to keep memories under 94º and this 20%less on rotation can help your fans lifespan
But you did a good job

And I noticed in the second picture you reduced the core clock on 3090 and "lost" some hashes, but the power draw decreased too