Does the discharge of semen droplets before or after urination necessitate ghusl?

Al-Wadi: A thick, white fluid that usually exits after urination. It is not related to arousal, and its ruling is the same as urine regarding purity and ablution (wudu').

Al-Madhi: A thin, sticky fluid that exits with minor arousal. It necessitates washing the entire male organ and performing ablution (wudu').

Al-Mani: A fluid that gushes out forcefully with major pleasure. It necessitates ritual bathing (ghusl).