Peperomia verticillata - Red Log Plant (4.5" Pot) - Little Prince To Go
Peperomia 'Rosso' | Peperomia caperata 'Rosso' – PlantX US
Peperomia 'Double Duty' 4 Inch - The Garden Corner
Super fat leaves with green tops and red underside. Found online. Not even sure if it's real. Maybe some sort of peperomia? (2nd photo in the comments) : r/whatsthisplant
Peperomia Ruby Cascade: Care for the Ruby Cascade Plant