Played the Remake but never the OG, what Order should i play the Games now?

So i never played the original Game but recently finished the Remake without informing myself about it. Now i found out that it actually is a bit of a different Story than the OG and im wondering what Game i should play next? Should i just continue with Rebirth and wait until this trilogy is finished or play the original now? Is it really that different from the Original or am i going to spoil myself if i play the OG now? Hoping to get some Insight what others in my Position did because i really don't know what i'm supposed to do now haha