وآخرهم محمد ﷺ
The last of the prophets is Muhammad ﷺ.
Finality means that no new prophet follows him. This is established in the Qur'an, the Sunnah and the transmitted understanding of the Muslim community. After his mission, guidance is sought by faithfully following his preserved teaching rather than awaiting a new prophetic authority.
A person's learning, saintliness, reforming work or extraordinary experiences do not make that person a prophet. Finality of prophethood and excellence among righteous believers are different questions.