Canadian universities (any, via enrolled PhD program)
Talentrah lists the facts of this programme with attribution. The official page above is always the authority on current terms and deadlines.
Restriction confirmed on official page: "International students residing outside Canada or enrolled at a university outside Canada are not eligible" — must be enrolled at a Canadian university, but nationality itself is unrestricted (confirmed: "An international student enrolled at a Canadian university" is explicitly eligible).
A free account also lets Farah check your eligibility and draft your personal statement, each for a small number of credits.