There are 4 Road Poneglyphs (RPs): the one in Zou, the one in WCI, the one in Wano, and the mysterious 4th one
Luffy has the Zou RP, WCI RP, and Wano RP
Teach currently has none, but Van Augur probably got a rubbing of the WCI RP, and Teach will steal Law’s Zou and Wano RP rubbings from Law when he beats him
Shanks currently has none, but he has just very recently decided to go for the One Piece, so he will have to get RPs. There’s a decent chance that Shanks knows where the 4th is, so maybe he has a copy of that one. Shanks may fight Kid, who has copies of the WCI and Wano RPs, and steal them from Kid
So Luffy and Teach will be missing only the 4th one, while Shanks will be missing only the Zou one
Luffy has the Zou RP, WCI RP, and Wano RP
Teach currently has none, but Van Augur probably got a rubbing of the WCI RP, and Teach will steal Law’s Zou and Wano RP rubbings from Law when he beats him
Shanks currently has none, but he has just very recently decided to go for the One Piece, so he will have to get RPs. There’s a decent chance that Shanks knows where the 4th is, so maybe he has a copy of that one. Shanks may fight Kid, who has copies of the WCI and Wano RPs, and steal them from Kid
So Luffy and Teach will be missing only the 4th one, while Shanks will be missing only the Zou one

