Does macOS Ventura support ABC Extended?

Hello everyone

I upgraded to Ventura from Monterey on a 16" MacBook Pro 2019 and noticed the System Preferences had undergone a major overhaul. It's now oddly called System Settings and looks less intuitively designed – I cannot even find ABC Extended (aka US Extended) for the life of me.

Please someone guide me how to add ABC Extended or any other alternatives for inserting Old English Latin characters.

Thanks in advance.