Pokémon Gen 6-8 Internal IDs

Gen 6-701 - Furfrou
702 - Phantump
703 - Trevenant
704 - Litleo
705 - Pyroar
706 - Scatterbug
707 - Spewpa
708 - Vivillon
709 - Skrelp
710 - Dragalge
711 - Bunnelby
712 - Diggersby
713 - Flabébé
714 - Floette
715 - Florges
716 - Noibat
717 - Fennekin
718 - Braixen
719 - Delphox
720 - Chespin
721 - Quilladin
722 - Chesnaught
723 - Froakie
724 - Frogadier
725 - Greninja
726 - Inkay
727 - Malamar
728 - Skiddo
729 - Gogoat
730 - Pangoro
731 - Helioptile
732 - Heliolisk
733 - Espurr
734 - Meowstic
735 - Pumpkaboo
736 - Gourgeist
737 - Tyrunt
738 - Tyrantrum
739 - Amaura
740 - Aurorus
741 - Dedenne
742 - Swirlix
743 - Slurpuff
744 - Honedge
745 - Doublade
746 - Aegislash
747 - Binacle
748 - Barbaracle
749 - Bergmite
750 - [UNUSED]
751 - Avalugg
752 - Pancham
753 - Fletchling
754 - Fletchinder
755 - Talonflame
756 - Clauncher
757 - Clawitzer
758 - Spritzee
759 - Aromatisse
760 - Klefki
761 - Hawlucha
762 - Noivern
763 - Goomy
764 - Sliggoo
765 - Goodra
766 - Carbink
767 - Sylveon
768 - Xerneas
769 - Yveltal
770 - Zygarde
771 - [UNUSED]
772 - Diancie
773 - Volcanion
774 - Hoopa

"_51" / "_52" - Mega Form

Gen 7-801 - Mareanie
802 - Toxapex
803 - Morelull
804 - Shiinotic
805 - Salandit
806 - Salazzle
807 - Pikipek
808 - Trumbeak
809 - Toucannon
810 - Oranguru
811 - Komala
812 - Bounsweet
813 - Steenee
814 - Tsareena
815 - Passimian
816 - Jangmo-o
817 - Hakamo-o
818 - Kommo-o
819 - Mimikyu
820 - Wishiwashi
821 - Pyukumuku
822 - Sandygast
823 - Palossand
824 - Minior
825 - Oricorio
826 - Yungoos
827 - Gumshoos
828 - Rockruff
829 - Lycanroc
830 - Tapu Koko
831 - Tapu Lele
832 - Tapu Bulu
833 - Tapu Fini
834 - Cutiefly
835 - Ribombee
836 - Grubbin
837 - Charjabug
838 - Vikavolt
839 - Mudbray
840 - Mudsdale
841 - Rowlet
842 - Dartrix
843 - Decidueye
844 - Litten
845 - Torracat
846 - Incineroar
847 - Popplio
848 - Brionne
849 - Primarina
850 - Dewpider
851 - Araquanid
852 - Stufful
853 - Bewear
854 - Turtonator
855 - Bruxish
856 - Drampa
857 - Dhelmise
858 - Togedemaru
859 - Crabrawler
860 - Crabominable
861 - Type: Null
862 - Silvally
863 - Comfey
864 - [UNUSED]
865 - Necrozma
866 - Wimpod
867 - Golisopod
868 - Fomantis
869 - Lurantis
870 - [UNUSED]
871 - Cosmog
872 - Cosmoem
873 - Solgaleo
874 - Lunala
875 - Nihilego
876 - Guzzlord
877 - Buzzwole
878 - Xurkitree
879 - Pheromosa
880 - Kartana
881 - Celesteela
882 - Magearna
883 - Marshadow
884 - Stakataka
885 - Blacephalon
886 - Poipole
887 - Nagandel
888 - Zeraora
889 - [UNUSED]
890 - [UNUSED]

"_61" - Alolan Form

Gen 8- 891 - Meltan
892 - Melmetal
901 - Nicket
902 - Thievul
903 - Chewtie
904 - Drednaw
905 - Gossifleur
906 - Eldegoss
907 - Yamper
908 - Boltund
909 - Skwovet
910 - Greedent
911 - Wooloo
912 - Dubwool
913 - Arrokuda
914 - Barraskewda
915 - Sizzlipede
916 - Centiskorch
917 - Cramorant
918 - Rookidee
919 - Corvisquire
920 - Corviknight
921 - Toxel
922 - Toxitricity
923 - Falinks
924 - Milcery
925 - Alcremie
926 - Cufant
927 - Copperajah
928 - Obstagoon
929 - Duraludon
930 - Blipbug
931 - Dottler
932 - Orbeetle
933 - Rolycoly
934 - Carkoal
935 - Coalossal
936 - Silicobra
937 - Sandaconda
938 - Zacian
939 - Zamazenta
940 - Eternatus
941 - Morpeko
942 - Indeedee
943 - Perrserker
944 - Pincurchin
945 - Snom
946 - Frosmoth
947 - Cursola
948 - Grookey
949 - Thwackey
950 - Rillaboom
951 - Sobble
952 - Drizzile
953 - Inteleon
954 - Scorbunny
955 - Raboot
956 - Cinderace
957 - Impidimp
958 - Morgrem
959 - Grimmsnarl
960 - Dracozolt
961 - Arctozolt
962 - Dracovish
963 - Arctovish
964 - Clobbopus
965 - Grapploct
966 - Applin
967 - Flapple
968 - Appletun
969 - Hattena
970 - Hattrem
971 - Hatterene
972 - Sinistea
973 - Polteageist
974 - Stonjourner
975 - Eiscue
976 - Dreepy
977 - Drakloak
978 - Dragapult
979 - Runerigus
980 - Mr. Rime
981 - Sirfetch'd

"_##_31" - Galarian Form
"_81_00" - Gigantamax Form