Had to make new profile after forgetting my original Wonka account login & email. Anyway, yes I do have the files and I'll post them below to download. All the files I've tested were used on Dolphin 5.0. I would've tested with real hardware, but I don't have a modded Gamecube though I assume they'll work just fine. I would also post the iso's I worked on here as they're technically considered homebrew, and not "official", but I don't want to risk it just in case.
In my tests most Nintendo games do not work. Commonly it results in a black screen crash. Others play just fine with 30 fps gameplay, but cut scenes are in 50fps (ie: Eternal Darkness, Luigi's Mansion, Wario World, Smash Melee, Power Tennis). A small selection of titles work flawlessly that'll run completely in NTSC fps rates (ie: Sunshine, Mario Parties 4-7, F-Zero GX, Fire Emblem POF). Though a weird oddity with Sunshine is if you use GC Bios in Dolphin Sunshine will act like a PAL title (25/50 fps) again even though the game reads as NTSC. But, an easy fix is not to use bios, when playing via Dolphin. Without it it'll run 30/60 fps.
Hope this helps and hope this will lead to better patches for other titles!