I've seen the API, and it's not either of those things if you've already used a structured logger?
Group is pretty much https://pkg.go.dev/go.uber.org/zap#Namespace
Record is the interface to log sinks, not something the typical programmer worries about.
What Go structured logging libraries predate Zap's 2016 creation? Only one I can remember is Logrus, which was using type Fields map[string]interface{}, the bad qualities of which are kinda the whole reason for Zap's creation, and slog follows the Zap-style API[1].
[1]: Though ignoring many of the optimizations..