Regarding 'Supported' Managed Switch: do you mean actually running on OpenWrt firmware?
=> If running on OpenWrt firmware is desired then look here for more info
- https://openwrt.org/supported_devices/openwrt_on_switches_faq
- https://svanheule.net/switches/current_status
- https://downloads.openwrt.org/releases/23.05.2/targets/realtek/
- Example: Netgear GS310TP
=> If running on OEM firmware is fine then you have plenty of options, ie.
- Netgear MS108EUP (2.5 Gbps) or GS308E (1.0 Gbps)
- ZyXEL GS1915-8 / GS1200-8 (1.0 Gbps)
In case looking for an additional Wifi router:
- Linksys E8450 / Belkin RT3200 (maybe 2nd hand when not available new)
- Asus TUF-AX4200
- Cudy WR3000