This pack contains a lot 1st gen pokemon. I used some in that maybe dont make sense but are ones i like.

Let me know if there are any problems with it so I can fix it/make it better.

Says its outdated but works in 1.18

Altered mobs:
bee-beedrill
cats - litten, espeon, eevee, purrloin, skitty, delcatty, meowstic pikachu meowth, persain
cow-snorlax
creeper-voltorb
donkey - mudbray
enderdragon-charizard
enderman-mew
cod-magicarp
salmon-goldeen
fox-vulpix
snow fox-eevee
ghast-weezing
horses - ponyta, rapidash, mudsdale, glastrieri, spectrier, keldeo
pig-sandslash
rabbits - scorbunny, wigglytuff, lopunny, azumarill, bunnelby
sheep-wooloo
shulker-cloyster
skeleton-lucario
wither skeleton-mewtwo
turtlte - tirtouga
magma cube-tangela
slime-graveller
spider-ariados
cave spider-spinarak
wither-haunter
wolf-aracanine
zombie-machoke
zombie viollager-hitmonchan
bat-zoobat
blaze-ghastly
chicken-spearow
dolphin-dratini
iron golem-blastoise
phantom-moltres
pufferfish-qwilfish
silverfish-caterpie
squid-tentacool
witch- team rocket member
zoombie pigman-gary oak

altered Plants:
Acadia sapling-chickorita
Growing wheat-oddish
Brown mushroom-diglet
dandelion-bellsprout
oak sapling- sudowodo
daisy-sewaddle
lilac - lileep
poppy-bellosom
red mushroom-vileplume
apple-applin

Other:
Sun-solrock
Moon-lunatone
Snowballs-pokeball
Slime balls-master ball
books-pokedex
Paintings-various poke things