Everyone Is From Another World, Except Me!?

Rocco is a novice adventurer who begins his journey to save his sister Natty, who is cursed by a demon and asleep. At an adventurer’s guild, he meets Taiga, who was given extraordinary abilities when he was reincarnated from another world! He also meets Sawyer and Mia, who were also reincarnated from another world and have cheat abilities, but something happens that shocks even them!

An entertaining and poignant otherworldly fantasy featuring a party of a novice adventurer, Rocco, and three reincarnated characters from another world!

So far so good, let’s enjoy the ride till it inevitably runs out of steam. The only thing I don’t like in the premise is that we have two basically identical isekai protags alongside one OI protag. It would have been better if one was classic isekai protag and another was from I dunno, revenge isekai? Slow life? Anything to really distinguish the two.

Or everyone having different appraisal systems? Like isekai protag can see levels/skills/etc. - usual stuff, OI heroine can see affection levels / hidden dialog options.