Available markers

using Makie

 marker = collect(AbstractPlotting._marker_map)
 positions = Point2f0.(0, 1:length(marker))
 scene = scatter(
     positions,
     marker = last.(marker),
     markersize = 0.8,
     marker_offset = Vec2f0(0.5, -0.4),
     show_axis = false,
 )
 annotations!(
     scene,
     string.(":", first.(marker)),
     positions,
     align = (:right, :center),
     textsize = 0.4,
     raw = true
 )
 update_cam!(scene, FRect(-2.5, 0, 2, length(marker) + 2))
 scene