The solution so far is to use Label in the same location as the Axis.
Something like:
GLMakie.Label(fig[i, 1], labels[i];
tellwidth=false, tellheight=false,
valign = :top, halign = :right, padding = (0, 5, 5, 0),
)
This requires one to know beforehand to which figure location each axis corresponds to. I’m now trying to figure out how to exact this information from an Axis instance.