I recently got back into Pokémon Shield after going back to my 3DS for a while, and I discovered the old playlist I had on my iPod for Max Raids/Dynamax Battles. Each of my main 'Mons had a song or two. I figured I'd share them with you all.

Joshua (Umbreon) - Black and Yellow, Wiz Khalifa/Dancing in the Moonlight, King Harvest
Blizzard (Glaceon) - Ice Ice Baby, Vanilla Ice/Wildside, Marky Mark
Duke (Jolteon) - The Walker, Fitz and the Tantrums/Radar Love, Golden Earring
Mint (Leafeon) - Walk on the Wild Side, Lou Reed/Knock On Wood, Amii Stewart
Prince (Vaporeon) - Beyond the Sea, Bobby Darin/Spring and a Storm, Tally Hall
Cinnamon (Sylveon) - These Boots Are Made for Walkin', Nancy Sinatra/Bibbidi Bobbidi Boo, Perry Como
Brandy (Kantonian Ninetales) Brandy (You're a Fine Girl), Looking Glass/Royals, Lorde
Floyd (Zorua) - Blue Song, Mint Royale/Der Kommissar, After The Fire
Louis (Lucario) - Saturday Night's Alright for Fighting, Elton John/I Was Made For Lovin' You, Kiss
Tenebrae (Absol) - Hocus Pocus, Focus/Twilight Zone, Golden Earring