Thanks for posting in the community forum!
You might find the discussion in Multicategory Axis Type Example? to be helpful, as it addresses a very similar issue to the one you are having.
To get you started creating your plot, here is some example code I came up with:
import plotly.graph_objects as go
x = [
["usa", "usa", "usa", "usa", "usa",
"africa", "africa", "africa", "africa", "africa", "africa",
"china", "china", "china", "china", "china"],
["abc", "xyz", "pqr", "mno", "fgh",
"xyz", "opo", "kjh", "pqr", "bcc",
"pqr", "tyu", "opo", "xyz", "ghj"]
]
fig = go.Figure()
fig.add_bar(x=x,y=[18, 10, 4, 4, 4, 14, 0, 0, 0, 0, 10, 4, 4, 0, 0])
fig.show()
