I just purchased a Harbinger LX12 USB mixer because... well... it was on sale.
USB is ASIO 2in 2out full duplex. I'm happy to announce that it was plug and play on Ubuntu Studio 22.04 running JACK (with KXStudio packages installed as well - I use Cadence as my JACK frontend). I already had WineASIO installed as well. I can't say if it will work without WineASIO.
Latency seemed great! Running at 48k, Buffer at 128, 0 xRuns.