Oh snap! I was just looking at originationdata.com this week! So awesome. I had originally hoped HMDA data was more than annual, but no luck. It's also a shame that the current admin turned off the data stream here: https://www.consumerfinance.gov/owning-a-home/explore-rates/
I thought maybe you'd been hit by that update, but even more bummed to hear Google enshittification struck again.
The Modified LAR product is what you may want to look at, then. Yes, it is annual, but if you aren't against modeling data, look at the rate spread value, segment then project vs current FRED data and you'll get pretty close to actuals. You can also extract fees and derive APR in addition to having APY data.
I thought maybe you'd been hit by that update, but even more bummed to hear Google enshittification struck again.