First off, welcome to PC. Go post sometime soon in the new members forum and say hi. :)
I have a full list. :) Counting those that are located just in the White Forest area as exclusives to that area, they are as follows:
Pidgey, Nidoran (both), Oddish, Abra, Bellsprout, Magnemite, Rhyhorn, Porygon, Togepi, Mareep, Hoppip, Wooper, Elekid, Wurmple, Lotad, Seedot, Ralts, Surskit, Slakoth, Whismur, Azurill, Aron, Trapinch, Corphish, Bagon, Starly, Shinx, Budew, Happiny
*I also need something from the Caterpie to Butterfree line, but it's a Route 12 find; Metapod in the grass, Butterfree itself in the shaking grass.
Many of these I have in Soul Silver and a few more in Emerald; however, I have to finish both games to get them through. This pains me as I have a Shiny Nincada that I need to transport from Emerald someday. Its day will come...and I have both Pearl and Platinum, so I can at least play those two in tandem and use the experience boosts on traded Pokémon to make it possible to go through the games SO much easier at once. :) Those games SHOULD take care of the ones on the end of the above list someday (Gen. IV there), but I know there are still odd ones I won't be able to find even as White exclusives. ;)
I'm heading to bed now, but definitely willing to work out a deal. I have both plain Zoruas and SuperZoruas™ (as I call them), and for the latter can give options for which of the moves to be written over by "Leer", which is apparently required for any bred Zorua (good thing all four moves are attacking moves). I plan to hand those out like candy. :D