Rom 9:24 speaks of calling His elect from the Gentiles as well as the Jews, there is no dispute about that.
Context in Rom 11 makes it very clear as to pronouns and who they refer to, e.g. ...
Romans 11:8-9,11-12,15-16,23-25,28,30-31 ESV
as it is written, "God gave them a spirit of stupor, eyes that would not see and ears that would not hear, down to this very day." [9] And David says, "Let their table become a snare and a trap, a stumbling block and a retribution for them; [11] So I ask, did they stumble in order that they might fall? By no means! Rather, through their trespass salvation has come to the Gentiles, so as to make Israel jealous. [12] Now if their trespass means riches for the world, and if their failure means riches for the Gentiles, how much more will their full inclusion mean! [15] For if their rejection means the reconciliation of the world, what will their acceptance mean but life from the dead? [16] If the dough offered as firstfruits is holy, so is the whole lump, and if the root is holy, so are the branches. [23] And even they, if they do not continue in their unbelief, will be grafted in, for God has the power to graft them in again. [24] For if you were cut from what is by nature a wild olive tree, and grafted, contrary to nature, into a cultivated olive tree, how much more will these, the natural branches, be grafted back into their own olive tree. [25] Lest you be wise in your own sight, I do not want you to be unaware of this mystery, brothers: a partial hardening has come upon Israel, until the fullness of the Gentiles has come in. [28] As regards the gospel, they are enemies for your sake. But as regards election, they are beloved for the sake of their forefathers. [30] For just as you were at one time disobedient to God but now have received mercy because of their disobedience, [31] so they too have now been disobedient in order that by the mercy shown to you they also may now receive mercy.
Which is simply speaking of the natural descendants of Abraham, Isaac, and Jacob who have true faith..the remnant spoken of in Rom 11:4.. nothing to do with us believing Gentiles.