hybrid bikes are a bit different from gravel bikes. the latter tend to have drop bars, more mountain bike-ish gearing and a more road bike like sitting position compare:
kona dew (a pretty traditional hybrid)
https://www.konaworld.com/dew.cfm
kona rove (firmly in the gravel/ adventure category)
https://www.konaworld.com/rove_dl.cfm
[1] https://www.youtube.com/watch?v=SfLwm_SOzaI