tbh i think sombra from overwatch would be a really good thief of light. she steals knowledge and information and uses said information to benefit her in the best way possible, be it blackmailing some high ranking official or selling it to the highest bidder, hell even her ult line is "lights out"

Hmmm, I would actually see her as a Thief of Void! She operates in the shadows and remains off the radar expertly, to the point of having erased her own name- Until Zarya catches wind of it of course. She does steal Information, but not any kind of Information- She’s after the dirty secrets and plots of organizations world-wide. She could also be a Rogue though, if you think of her trying to unveil these world-wide plots as something selfless, but given the catalyst was her childhood and she tends to tease her ‘partners’ at Talon and ruins an entire operation to further her own agenda, I would say she is a Thief indeed.