I'm old... so I use Metrics a lot.
I was surprised today though, internal survey, to find the #1 telemetry signal used to resolve incidents quickly... was Profiles.
Within Grafana we have a lot of metrics, logs, traces, and profiles... but our own engineers, the thing they use the most during incidents: Profiles.
Grafana Pyroscope has come from nothing to one of the most essential tools in only 18 months.