Where are all the mandatory double battles in each Pokemon game?

Question

I was watching some solo runs on YouTube and I learned that there are some mandatory Double Battles that you can't progress while only having one Pokemon in your party.

I remember some of those mandatory double battles are Raihan, Tate and Liza, the Spear Pillar Galactic Grunts, and the Route 3 twins in B/W, I do not remember the others.

Comments

the ghost leader in SV is a person

Answer 1

dont take this for 100% accuracy, but I have cited many resources such as Bulbapedia and Reddit threads.

Ruby/Sapphire/Emerald:
Mossdeep City: Tate and Liza

Diamond/Pearl/Platinum:
Route 210: Maya and Dennis
Route 215: Maya and Dennis
Route 222: Miguel and Alec
Route 229: Sue & Ty

B&W:
Route 3: Twins
wellspring cave
pinwheel forest

X/Y:
Route 7: Tierno and Trevor

Sun/Moon/Ultra Sun/Ultra Moon:
Aether Paradise: Faba and Aether Foundation Employee
Mount Lanakila: Guzma and Plumeria

Sword/Shield:
Spikemuth: Team Yell Grunts
Hammerlocke Stadium

For BDSP, same double battles as D&P
for ORAS, refer to R&S
If the game isnt here, theres no required double battles.
dlc NOT included

Comments

Ummm, pretty sure the Oleana and Rose fights aren't double battles.

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ty ^ editing the answer

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Possibly a better way to do this is to look up the routes for non-glitch speedruns of each game. If the battle isn't truly mandatory then it won't be included (or maybe tricks will be used, e.g. talk to one trainer to turn it into a single battle instead).
Not to say anything about whether this answer is accurate anyway.