Size	Type	Alignment	Challenge	Environment
Tiny Small Medium Large Huge Gargantuan	Aberration Beast Celestial Construct Dragon Elemental Fey Fiend Giant Humanoid Monstrosity Ooze Plant Undead	Unaligned LG NG CG LN N CN LE NE CE	0 1/8 1/4 1/2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30	Arctic Coastal Desert Forest Grassland Hill Mountain Swamp Underdark Underwater Urban

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Items lacking descriptions are everything from Volo's Guide to Monsters (vg) (106 creatures), many things from the Monster Manual (mm) (139 creatures), and the rest are from the Monster Manual via open5e (o5e) (298 creatures) (https://open5e.com/license.html).
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Name	Size	Type	Alignment	Challenge	XP	Source