Using a google doc for this is a good idea, and your list is also very informative. I'm really sorry for not updating my index, but as said, I don't use the O4X any more. Instead the list and this thread are now linked. I hope this is ok with you and that this list has a longer life.
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LG Nexus 5
Unlocked - stock rom
LG Optimus 4X HD
Unlocked - retired with JB 4.3
The Optimus 4X Index - Guides, ROMs, MODs, etc.!
PVT1-S-Off - retired with ICS
Phone history: Sony CD-5 -> Siemens SL10 -> Sharp GX-10 -> Sony V600 -> HTC Desire -> LG Optimus 4X HD -> LG Nexus 5