Lycanroc Vmax: Hunting Claw is nice if you can take out a Pokémon V or Vmax with but that is it.
Golurk V: Rewind Beam is a decent attack that can deal 220 with two Single Strike energy cards. Golurk is better than Volcanion V but worse than Single Strike Urshifu V.
Hariyama: Guts is a great ability but his damage output is low. Might be possible to combine this card with Dragon Fang Scroll and Houndoom in addition to Bronzong and Metal acceleration but that sounds clunky.
Wobbuffet: Mirror Pain can be a nice tech move if you have a severely damaged Pokémon Vmax on the bench but its uses are rather niche.
Dragon’s Fang Scroll: Nice tech in Duraludon decks and possibly Hariyama decks.The Scroll seems to be made to link the mascot of the sub-set to it's respective battle style.
Gyarados Vmax: The main selling point here is Temper Tantrum with Memory Capsule. Without that combo Gyarados Vmax would be worse than Ice Rider Calyrex Vmax.
Volcorona V: I do like the first attack here but the scaling factor is rather low.
Medicham V: Yoga Loop is the main attack here and it is an awesome one. Can see this card as a tech in both Rapid Strike Urshifu and Rapid Strike Inteleon decks. Might even be decent as an addition to Blaziken and Zeraora decks.
Cloyster: Aqua Split combined with Shell Armor could actually be decent with Passimian and Telescopic Sight.
Flying Dragon Scroll: Again, this scroll seems to be made to link the mascot of the sub-set to it's respective battle style. Not sure whether Rapid Strike rayquaza needs this scroll but it could be a decent addition to Blaziken and Zeraora decks.
Jumpluff: TThe entire line can be searched with Level Ball which is a massive bonus. Solar Evolution on Skiploom even bypasses standard evolution rules and searches out Jumpluff. Fluffy Combo Strike is a real nice ability. Based on the
commercial aired by the franchise it seems that Fluffy Combo Strike can also be used with attacks provided by the Rapid Strike Scrolls. Passimian and Scroll of Swirls seem to be a decent combo here since it does 120 damage to all Pokémon V on the opponent's side and 60 damage to all non-V Pokémon on the opponent's side. Another nice combo would be Scroll of Skies.
So this means that we are left with two unrevealed Pokémon Vmax and one Pokémon V from the Rapid Strike Rayquaza part of the set.