visualisation - Black/white hatching pattern fills in QGis

I am looking to replicate black & white maps in QGis, using hatching patterns and greyscales to indicate different categories of a continuous variable (example below).

It is possible/straightforward to do so in QGis? At first sight I only see color gradients and symbol fills.

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Answer

It is very straightforward - but you won't get a set of automatic styles for each level. Under 'style', in 'symbol layer type', select a 'line pattern fill':

Add more symbol layers (the green + button in the image above) with line layers at different angles to get crosshatching:

To replicate the map you showed as an example, you'll want to do a 'graduated' symbol type instead of 'single symbol', and do a custom fill for each graduated level.