Isn’t “we older people” simply clarifying that, as used here, “we” refers to older people? If it is, then the clarification isn’t strictly necessary, so “we older people” becomes simply “we people” or even more simply “we”; replacing “we older people” with “we” means that “Some of we older people” becomes “Some of we”, but I hope it’s clear to everyone that it should be “Some of us”.
"I am ignorant of absolute truth. But I am humble before my ignorance, and therein lies my honour and my reward.”
— Kahlil Gibran