棒グラフは水平方向に表示できます。

ScottPlot.Plot myPlot = new();

ScottPlot.Bar[] bars =
{
    new() { Position = 1, Value = 5, Error = 1, },
    new() { Position = 2, Value = 7, Error = 2, },
    new() { Position = 3, Value = 6, Error = 1, },
    new() { Position = 4, Value = 8, Error = 2, },
};

var barPlot = myPlot.Add.Bars(bars);
barPlot.Horizontal = true;

myPlot.Axes.Margins(left: 0);

myPlot.SavePng("demo.png", 400, 300);