Just to chime in, I noticed a few missing cards on your Cyndaquil spreadsheet and probably an extra one that you can probably take out to save yourself some headache:
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For unlimited E1 (from the starter deck), I think you can pretty much rule out the existence of unlimited 014/029, as none have ever surfaced despite more copies of other unlimited E1 cards surfacing. The release of these is still unknown, and it’s unclear why many other unlimited cards in the e starter deck do not seem to exist, but I think it’s safe to cross it off the master list for now (until one randomly comes out of the woodwork in the future!).
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A number of the constructed decks/half-decks have both 1st edition and unlimited versions (e.g. Typhlosion constructed deck, Meganium constructed deck, Master kit, etc.). @Typhlosion_Collector has a master list of Cyndaquil/Cyndaquil cameos that you can cross check with here. I haven’t seen any cards from the 1st edition Feraligatr constructed deck, but maybe Typhlosion_Collector can opine on if these cards are just super rare or just exist in theory for now.