The OpenWrt One project

I've a old PCIE card based on Atheros. For this card, iwlist reports:
[...]
valid interface combinations:
* #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1,
total <= 2048, #channels <= 1, STA/AP BI must match
[...]
This allows me to use hostapd and propose several SSID (at most 8 here). I use 3:
- one for personnal wifi (key given to familly only, access to all my internal network/services)
- one for guests (easy key regulary rotated, only access to internet, not internal network)
- one for domotic (no internet access for domotic gadgets)

However, this card does not support 5 or 6GHz (with the corresponding speed).

My motherboard also has a wifi 6E chip (Intel). However, iwlist reports:
[...]
valid interface combinations:
* #{ managed } <= 1, #{ AP, P2P-client, P2P-GO } <= 1, #{ P2P-device } <= 1,
total <= 3, #channels <= 2
[...]
So, only one SSID at most with hostapd. I setup this card for my personnal network on 5GHz bands.

I would be very pleased to replace both of them by a wifi 6E PCIE card with good linux support for several AP. For now, I do not know where to look for.