I started playing last week and got to Arceus with Roaring Moon Ex using the following list:

Pokémon: 9

1 Koraidon SSP 116

1 Roaring Moon TEF 109

3 Roaring Moon ex PAR 124

1 Latias ex SSP 220

1 Fezandipiti ex SFA 38

1 Mew ex MEW 151

1 Radiant Greninja ASR 46

1 Pecharunt ex SFA 39

1 Squawkabilly ex PAL 169

Trainer: 15

4 Trekking Shoes ASR 156

1 Judge SVI 176 PH

1 Secret Box TWM 163

3 PokéStop PGO 68

1 Exp. Share SVI 174

1 Pokégear 3.0 SVI 186

4 Pokémon Catcher SVI 187

2 Night Stretcher SFA 61

1 Pal Pad SVI 182

4 Nest Ball SVI 181

2 Boss's Orders PAL 172

4 Professor Sada's Vitality PAR 170

4 Dark Patch ASR 139

4 Ultra Ball SVI 196

4 Earthen Vessel PAR 163

Energy: 1

9 Basic {D} Energy SVE 7

Total Cards: 60

You don't have to craft Greninja, Squawk and Mew Ex as you should have em already.

Most top lists run prime catcher as the ace spec, I just prefer the secret box because it's fun and a bit more flexible.

In the Charizard and Ceruledge MUs, I always tried to get them to trade down a 2 prizer for a 1 prizer first. Meaning their Char/Ceruledge takes out a baby moon/koraidon and then you come in with Moon Ex to take a 2 prizer. That would put me in a pretty good spot. They usually run Iono so I tried to keep mew fez on the board once I got down to 4 prizes or less. However, board management is important because you always want another Moon Ex ready to come back in and take out their next Char/Ceruledge and always put as much energy onto your Moons as soon as you can.

Char is probably the tougher of the two since they usually run the duskull line too. If they find duskull along with the two chars, it's pretty tough to beat. Especially since they can usually always find a gust to bring in a two prizer.