What pairs well with Gholdengo ex deck?

Candy0_o

I'm just curious because I've seen some strong decks in pokemon tcg internationals and some have Gholdengo. I'm just curious.

Octowen

This list got 80th at NAIC:

Spoiler Warning

Pokémon: 14
2 Gimmighoul PAR 87
2 Gimmighoul PAR 88
4 Gholdengo ex PAR 139
1 Varoom OBF 154
1 Revavroom SVI 142
1 Origin Forme Palkia V ASR 39
1 Origin Forme Palkia VSTAR ASR 40
1 Manaphy BRS 41
1 Radiant Greninja ASR 46

Trainer: 35
3 Irida ASR 147
3 Ciphermaniac's Codebreaking TEF 145
2 Boss's Orders PAL 172
1 Cyllene ASR 138
1 Roxanne ASR 150
4 Superior Energy Retrieval PAL 189
3 Earthen Vessel PAR 163
3 Buddy-Buddy Poffin TEF 144
3 Nest Ball SVI 181
2 Ultra Ball SVI 196
1 Switch SVI 194
1 Canceling Cologne ASR 136
1 Energy Retrieval SVI 171
1 Counter Catcher PAR 160
1 Hyper Aroma TWM 152
1 Super Rod PAL 188
1 Pal Pad SVI 182
1 Hisuian Heavy Ball ASR 146
1 Enhanced Hammer TWM 148
1 PokéStop PGO 68

Energy: 11
7 Water Energy SVE 3
4 Metal Energy SVE 8

DoubleCure

There are also some successful Gholdengo lists (successful considering a relatively rogue deck) that don't use Palkia and rely more on Dudunsparce/Fezandipiti draw engine.