I have looked at Poppy (Obsidian Flames) before as a supporter and neglected it because usually getting energy on Pokemon was more important and drawing power, but with Teal Mask Ogerpon ex (Twilight Masquerade) you get drawing and energy acceleration at the same time and poppy can serve as a quick energy shifting tool which opens possibilities for a lot of pokemon with high energy costs but no great acceleration.
This is just an initial list I need to do some testing to figure out balances and maybe also swap out pokemon the sinistcha are not really reliant on high energy, but they can either be a decent single prize attacker or energy recovery in the later stages.
There are other high energy basics that come to mind as well like Wo-Chien (Paradox Rift) I have not looked at too many of them so I will probably update and edit the Deck based on suggestions and just trial and error.