Labeling Automation Parameters
Automatic labeling uses ImageSize, LabelStyle, PlotRange, etc. to compute optimized positions that avoid overlapping with points and other labels.
Changing ImageSize can affect how many labels fit in the plot.
Changing AspectRatio, PlotStyle and LabelStyle will affect the layout of labels dramatically.
Other plots consider additionally. ListPointPlot3D also considers ViewPoint, ViewProjection, etc.