Here's Maronda in the Scorpion Stinger
Here's another new shot of Maronda
Here's a full shot of Maronda and yes this is also new footage
Once you see the Blue Ranger fights Stingwingers, you eventually see a quick shot of the Yellow Ranger fighting Stingwingers but it then cuts to a Sentai stock of the Red Ranger and Maronda fighting.
This shot of the Red Ranger is also Sentai footage.
These shots of Colby in his Bike Gear is back to new footage

Once you see this up-close shot of Colby's Bike then it's back to Sentai footage.
It then cuts back to new footage of the 5 Rangers.
Here's another new shot of the Capsular Cycle
It then cuts back to Sentai footage of Colby riding his Bike.
This shot of the Red Ranger kicking Maronda while they're riding their vehicles is new footage but once it cuts back to the Red Ranger then it's back to Sentai footage.
Any kicking shots by Red that go towards Maronda while they're riding their Bikes is new footage. This is because some of his attacks in Sentai went for Maronda's face.
This shot of the Red Raqnger in his Capsular Cycle is when it goes back to new footage.
The up-close shot of the amulet in Red Ranger's hand as it's releasing the prisoners is Sentai footage however once it cuts to the shot of the Rangers (with Colby in the same shot) it's back to new footage.
Once you see Maronda growing, it's back to Sentai footage since her growth sequence is Sentai footage. In Power Rangers, she never drinks anything in order to grow but in Sentai she does.
Once you see Maronda has finished her growing, it then cuts back to new footage of the Rangers since they're still on the ground.
Once you see the Sentai stock sequence of the Lion appearing from underground then that's back to Sentai footage once again.

Sentai footage comes from Ginga Episode 32