Phew, it's been a while since I checked this thread.
Sugimori art is the official art of the Pokémon, as in the Pokémon as drawn by Ken Sugimori (the main designer). TCG stands for Trading Card Game, and thus TCG art is basically the pictures found on Pokémon cards. I have no idea what the heck dreemxweever meant by "Japanese animé versions of sprites from the Pokémon games", but whatever it is it's not what they actually are. o.o
Some elaboration on exactly what you mean by "more detailed stuff" would be nice. I make sprites in the style of the official Pokémon sprites, so if it's stylistically you're talking about, then I'm not interested. If not, as I said, please elaborate.
Anyway:
Fwee, new Leta line sprites. :D Here are the shinies, if you're interested:
And the old ones, for reference:
The new ones are all scratch except that I reused the shape of Leta's head from the old sprite (which was originally an Eevee stripped of all its features). I'm especially happy with the new Letal. :3