From Ghoulies and Ghoosties, Long-leggety Beasties, And Things that go bump in the night....

Version 1 is via Weird Tales ... and via The Magic Casement: An Anthology of Fairy Poetry:

From Ghoulies and Ghoosties, 
Long-leggety Beasties, 
And Things that go bump in the night.
Good Lord, deliver us!
     - Old Cornish Litany / - Quaint Old Litany

Version 2, Scottish pronunciation from a commentor (rhymes better, eh?):

Frae Ghoulies and Gheesties, 
Long-leggedy Beasties, 
And Things that ga' bump in the night.
Good Lord, deliver us!
     - Litany

https://wordhistories.net/2018/07/24/things-go-bump-night/

... preface to The Magic Casement: An Anthology of Fairy Poetry. Edited, with an introduction, by Alfred Noyes¹ (London: Chapman and Hall Limited, 1908):

“And if that the bowle of curds and creame were not duly set out for Robin Good-fellow, why, then, ’ware of bull-beggars, spirits,” etc.
“From Ghoulies and Ghoosties, long-leggety Beasties, and Things that go Bump in the Night,
     Good Lord, deliver us!”
                              Quaint Old Litany

GREAT LIST OF MONSTERS, NAMED in 1859, RELATED KINDA, dude talkin' 'bout hobbits: https://www.etymonline.com/word/Hobbit

and more info here, thanks Thoul: https://thoulsparadise.blogspot.com/2015/12/gallytrots-spoorns-and-tantarrabobs.html and https://dn790004.ca.archive.org/0/items/denhamtractscoll02denhuoft/denhamtractscoll02denhuoft.pdf

This has some rare ones defined: https://britishfairies.wordpress.com/tag/duergar/

Below, I've underlined and bolded several interesting ones. Looks at those word relationships. Some are different pronunciations of the same word in different dialects most likely, others are related to words we use today! How about "kidnappers" as a monster... wondering if it's like the changeling type situation, is it? Death-hearses, really that was a monster?! Snapdragons weren't always just a flower? 

Of course we know ghost = geist, so likely -> guest -> barguest 

Spoorn... couldn't find much out there, very rare.

Note all the instances of hob+other, but no hob listed by itself. Wikipedia says a "hob" is a house spirit. 

Elf-fires - as in DnD fairy fire, right? 

Bug - wikipedia, on the Bugbear entry, says derived from either Middle English "bugge" or Old Welsh "bwg" (evil spirit or goblin type thing) or Old Scots bogill (goblin)... and probably related to the words "bogeyman" and "bugaboo", they say. Which I say would mean related to boggles, 

Bugbear - wikiped says was a creepy hairy bear type monster lived in the woods in medieval England.

mannikins / gnome(?) -  like our modern mannequin? This says... the word gnome was made up by Paracelsus (born 1493) way after dwarves and kobolds, and they also explain mannikins was used for goblin in the 1920s apparently: https://britishfairies.wordpress.com/tag/mannikin/ and funny stuff here https://britishfairies.wordpress.com/2019/01/20/anti-paracelsus-the-man-who-messed-up-faery/ ... says Paracelsus called gnomes apparently also by the names/descriptions "pygmies" and "mountain mannikins". ... "so, as Katherine Briggs wrote in the Dictionary of fairies, gnomes “belong rather to dead science than to folk tradition.”

undines - (not listed in the big super quote) nymphs of water and 

sylphs - nymphs of the air (Paracelsus made up sylphs also they say)

The word also turns up in a very long list of folkloric supernatural creatures in the writings of Michael Aislabie Denham (d. 1859) as an aside to his explanation that those born on Christmas Eve cannot see spirits. Denham was an early folklorist who concentrated on Northumberland, Durham, Westmoreland, Cumberland, the Isle of Man, and Scotland. This was printed in volume 2 of "The Denham Tracts" [ed. James Hardy, London: Folklore Society, 1895], a compilation of Denham's scattered publications.

What a happiness this must have been seventy or eighty years ago and upwards, to those chosen few who had the good luck to be born on the eve of this festival of all festivals; when the whole earth was so overrun with ghosts, boggles, bloody-bones, spirits, demons, ignis fatui, brownies, bugbears, black dogs, specters, shellycoats, scarecrows, witches, wizards, barguests, Robin-Goodfellows, hags, night-bats, scrags, breaknecks, fantasms, hobgoblins, hobhoulards, boggy-boes, dobbies, hob-thrusts, fetches, kelpies, warlocks, mock-beggars, mum-pokers, Jemmy-burties, urchins, satyrs, pans, fauns, sirens, tritons, centaurs, calcars, nymphs, imps, incubuses, spoorns, men-in-the-oak, hell-wains, fire-drakes, kit-a-can-sticks, Tom-tumblers, melch-dicks, larrs, kitty-witches, hobby-lanthorns, Dick-a-Tuesdays, Elf-fires, Gyl-burnt-tales, knockers, elves, rawheads, Meg-with-the-wads, old-shocks, ouphs, pad-foots, pixies, pictrees, giants, dwarfs, Tom-pokers, tutgots, snapdragons, sprets, spunks, conjurers, thurses, spurns, tantarrabobs, swaithes, tints, tod-lowries, Jack-in-the-Wads, mormos, changelings, redcaps, yeth-hounds, colt-pixies, Tom-thumbs, black-bugs, boggarts, scar-bugs, shag-foals, hodge-pochers, hob-thrushes, bugs, bull-beggars, bygorns, bolls, caddies, bomen, brags, wraiths, waffs, flay-boggarts, fiends, gallytrots, imps, gytrashes, patches, hob-and-lanthorns, gringes, boguests, bonelesses, Peg-powlers, pucks, fays, kidnappers, gallybeggars, hudskins, nickers, madcaps, trolls, robinets, friars' lanthorns, silkies, cauld-lads, death-hearses, goblins, hob-headlesses, bugaboos, kows, or cowes, nickies, nacks [necks], waiths, miffies, buckies, ghouls, sylphs, guests, swarths, freiths, freits, gy-carlins [Gyre-carling], pigmies, chittifaces, nixies, Jinny-burnt-tails, dudmen, hell-hounds, dopple-gangers, boggleboes, bogies, redmen, portunes, grants, hobbits, hobgoblins, brown-men, cowies, dunnies, wirrikows, alholdes, mannikins, follets, korreds, lubberkins, cluricauns, kobolds, leprechauns, kors, mares, korreds, puckles korigans, sylvans, succubuses, blackmen, shadows, banshees, lian-hanshees, clabbernappers, Gabriel-hounds, mawkins, doubles, corpse lights or candles, scrats, mahounds, trows, gnomes, sprites, fates, fiends, sibyls, nicknevins, whitewomen, fairies, thrummy-caps, cutties, and nisses, and apparitions of every shape, make, form, fashion, kind and description, that there was not a village in England that had not its own peculiar ghost. Nay, every lone tenement, castle, or mansion-house, which could boast of any antiquity had its bogle, its specter, or its knocker. The churches, churchyards, and crossroads were all haunted. Every green lane had its boulder-stone on which an apparition kept watch at night. Every common had its circle of fairies belonging to it. And there was scarcely a shepherd to be met with who had not seen a spirit!