Mediatek ARM devices currently get more open source support than Qualcomm devices from what I see.
I would prefer MT7622 with MT7915 Mediatek AX devices like Netgear WAX206, Linksys E8450 or Belkin RT3200.
The next generation of Mediatek MT7986 and MT7981 devices are already getting support. Asus TUF AX4200 for example, or Zyxel EX5601-T0: https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=1c05388ab04c934ec240e8362321908f91381a90