On paper, the new Bridgelux Thrive cobs seem to fit the bill.
You’re in luck, I’ve been on a similar mission, so I’ve catalogued every super-high-CRI consumer-available COB I can find data or reviews on, and sorted them by lumen output per dollar. Hope this helps:
Edit2: NOTE that the items with built in color temp adjustability (Vesta, etc) get a 2x boost in their lumen/$ value given its value for my use cases.
EDIT: I’ve been exploring a DIY E26 socket bulb, but looking for Zigbee (or at least wifi) connectivity, 2 channel dimming for color temp control throughout the day. It’s not so simple to DIY even a single dimmable power supply in an A19 or A21 body, let alone adding support for a second channel and integrating a wireless board of some sort while still having sufficient heat sinking.
I’m curious what your use case is for 22W output? My target is a 100w A21 replacement, which means roughly 1100 lumens, or about 12W combined at today’s high-cri efficiencies.