Important episodes in each season

A friend of mine wants to get into MLB, they’ve watched a few episodes REALLY long ago so they don’t remember much. I made a list of all episodes/specials that they should watch and omitted some that didn’t seem very important to the plot since some eps in S1 and 2 are kinda boring and my friend can’t watch all eps cause being a student in this era is shitty 😔 (she doesn’t get a lot of free time).

I’d be thankful if someone could let me know if I missed out on any eps that are important for the plot or added something that isn’t really necessary to watch. I included eps where some characters/villains that come back later are introduced too.

S1:
Stormy weather
Bubbler
The Pharaoh
Lady WiFi
Timebreaker
Kungfood
Animan
Antibug
The puppeteer
Reflekta
Guitar villain
Volpina
The origins (part 1 and 2)

S2:
The collector
Befana
Riposte
Robostus
The dark owl
Glaciator
Sapotis
Anansi
Sandboy
Reverser
Frozer
Queens battle (part 1 and 2)
Malediktator
Heroes day (part 1 and 2)

S3:
Backwarder
Chameleon
Silencer
Oblivio
Reflekdoll
Onichan
Miraculer
Desperada
Star train
Kwamibuster
Feast
Ikari gozen
Timetagger
Gamer 2.0
Chat blanc (THIS ONE OMG)
Felix
Ladybug
Battle of miraculous (part 1 and 2)

Specials:
New York
Shanghai

S4:
Truth
Lies
Gang of secrets
Furious fu
Sole crusher
Queen banana
Crocoduel
Optigami
Sentibubbler
Rocketear
Hack san
Glaciator 2
Ephemeral (akshakjsksj)
Gabriel agreste
Kuro neko
Penalteam
Qilin
Shadow moths final attack (part 1 and 2)

After s4:
Paris special

S5:
The entire thing except “Action”
After S5: London Special

I didn’t make a list of S6 cause idk the proper order in which they should be watched in (I just watch them as they’re released). Also completely sure about when to watch the specials.