I'm not seeing anything online about the HP envy series having Thunderbolt compatibility, so the USBC port may just be limited to USB devices.
In that case, I'd recommend something like the StudioLive 24R for the channel count and flexibility between the studio and live settings.
It can be used alone or with more series 3 equipment. Pretty flexible with the DSP options.
I also enjoy the sound of the 1824c interface, but 16 mic channels are the max with that option.
Back to Thunderbolt Questions:
Besides running two ADAT Preamps to a single Quantum 2626 to achieve 24 Mic pres, here is what can happen.
1. Quantum 2626 can be stacked together if the computer in use has two Thunderbolt ports. (I recommend BNC cables for clocking)
2. If the computer only has TB3 one port, you can stack the 2626 using the Quantum Thunderbolt 2 Series. (I still recommend BNC cables for clocking)
More on that is covered in this article https://support.presonus.com/hc/en-us/articles/360040368472-Connecting-Quantum-Quantum-2-or-Quantum-4848-to-Quantum-2626
*I have tested the Quantum series in Cubase and I can confirm it is wicked fast.