LA Chef Conference is listed as American and sits at the $$$$ price level, with a 4.3 Google rating from 639 reviews. That is the strongest public signal here: a sizable review base, premium positioning, and enough attention to merit a closer look.
Blackbird check-in volume and busiest days are not available, and there are no highlighted review snippets to verify specific dishes or service themes. So the honest read is measured: this is a high-priced American listing with real review density, but not enough sourced detail to name a signature order.