What is the ruling on reciting Surahs (Yaseen, Al-Waqi'ah, Ar-Rahman, Ad-Dukhan, Al-Mulk) after the mentioned prayers, and is what has been mentioned regarding their virtue authentically reported?

The virtues of surahs are only established by authentic reports. There is no authentic evidence to prove that reciting Surat Yasin after Fajr fulfills needs, or reciting Surat Al-Waqi'ah after Dhuhr protects from poverty, or Surat Ar-Rahman after Asr has mercy on weakness, or Surat Ad-Dukhan after Maghrib, for which seventy thousand angels seek forgiveness for its reciter. The hadiths reported in this regard are weak or fabricated. As for Surat Al-Mulk, its virtues have been reported in a way that enhances it, which is that it intercedes for its reciter until he is forgiven, and the Prophet, peace and blessings be upon him, used to recite it before sleeping.