DistressedGoat23 notice the last argument in report_histogram, 'extra_layout'
https://clear.ml/docs/latest/docs/references/sdk/logger#report_histogram
You can then specify the plotly histogram orientation, full details here:
https://plotly.com/javascript/reference/bar/
I'm assuming the one you are after is 'orientation '
https://plotly.com/javascript/reference/bar/#bar-orientation