PointLegend

Similar to SwatchLegend, but renders entries as points.

Styling options

Supports LegendFunction, LegendLayout, LegendMargins, LabelStyle, RoundingRadius, and Background. See SwatchLegend styling options for the supported values and examples.

ListPlot[{{1, 4, 2}, {2, 3, 5}},
 PlotLegends -> PointLegend[Automatic, {"Series 1", "Series 2"},
   LegendFunction -> "Framed",
   Background -> White,
   LegendLayout -> "Row"
 ]
]