After a few ‘all-road’ gravel/cross builds over the last couple years, have sized up, slightly, as the longer headtube and longer forks seem to mitigate the effects of the longer top tube, the bars are higher for using the drops off road and while longer top tube and wheel base feels loads more stable on descents. Also at my height, avoids toe overlap with bigger tyres. Some say it’s not a problem, which it isn’t much, but nice to avoid if other factors also suit.
Only gone up by a bit though, i.e. from a 53-54 ETT on road bikes to a 54-56 on gravel/cross bikes, sometimes with shorter stems.
Note – sod off if you’re going to argue the difference between a gravel and cross bike – I’m talking bikes used for weekend road/bridleway/singletrack rides, not racing, where a smaller frame might have benefits. A cross bike can be used for such.