I made a new shadow plugin named "motion shadow" it is very simple, It works in both 2.10 and 3 but has more benefits in 3 because if you chain Inner Glow on top of it non-destructively it looks cooler like a flame. So basically its a drop shadow but the X and Y of the gaussian blur are in your control.
Download below

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linux_binaries_gegl_plugin.zip [7.18 KiB]
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SourceCode.zip [4.27 KiB]
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LOCATION TO PUT BINARIESWindows C:\Users\(USERNAME)\AppData\Local\gegl-0.4\plug-ins
Linux ~/.local/share/gegl-0.4/plug-ins
Linux (Flatpak includes Chromebook)~/.var/app/org.gimp.GIMP/data/gegl-0.4/plug-ins