Imam al-Jazuli compiled Dala'il al-Khayrat, one of the most beloved collections of salawat on the Prophet ﷺ, recited and copied across the Muslim world. It reflects the mainstream Sunni emphasis on abundant blessings upon the Prophet.
Such formulas are discussed in classical works like al-Nawawi's al-Adhkar and modern SeekersGuidance answers on salawat.
Virtues of sending blessings on the Prophet
SeekersGuidance
Salawat in Sunni practice.