Listed below are every single Holo Rare in the TCG featuring Pokémon that were not fully evolved at the time of release. This includes only main expansions - no promotional cards, special sets or sub-sets. The vast majority of holofoil cards featuring pre-evolution Pokémon were not included in main expansion sets (this means that they aren't classified as Holo Rares), therefore not included in this list.
Base Set
- 5/102 Clefairy
Fossil
- 6/62 Haunter
Base Set 2
- 6/130 Clefairy
Gym Heroes
- 2/132 Brock’s Rhydon
- 4/132 Erika’s Dragonair
Neo Genesis
- 12/111 Pichu
Neo Discovery
- 7/75 Magnemite
Legendary Collection
- Dark Slowbro 8/110
Expedition Base Set
- Magby 17/165
- Pichu 22/165
EX FireRed and LeafGreen
- Slowbro 14/112
Rocket Gang Strikes Back
- Treecko 011/084 (Gold Star)
- Torchic 020/084 (Gold Star)
- Mudkip 033/084 (Gold Star)
EX Unseen Forces
- Slowbro 13/115
HeartGold Collection
- Smoochum 037/030
- Cleffa 049/070
Evolutions
- Magneton 38/108
- Clefairy 63/108
- Chansey 70/108
Crimson Invasion
- Type: Null 89/111
Unbroken Bonds
- Slowbro 43/214
Hidden Fates
- Eevee 48/68
Cosmic Eclipse
- Magneton 69/236
Source
I hope this answers your question.
