Meant to post this before the week starts, but I forgot. These changes were discussed before Week 4 starts and they take effect immediately.
Aerodactyl (Tier 2 -> 3)
Miltank (Tier 3 -> 2)
Kangaskhan (Tier 4 -> 3)
Quagsire (Tier 4)
Scyther (Tier 4)
Snorlax (Tier 4 -> 3)
Volbeat (Tier 4 -> 3)
Illumise (Tier 5 -> 4)
Ursaring (Tier 5 -> 4)
For Week 4, any NFE that isn't listed in a tier yet can be used.
Swablu is legit, because it is not tiered yet.
Porygon2 is not legit, because it is tiered in 2.
Murkrow is not legit, because it is tiered in 3.
Scyther is legit, because it is tiered in 4.