Destiny

nothing similar except that one of the leads is a celebrity while the other is a commoner, of course in YAMG the FL is the celebrity and the ML despite not being a celebrity is celebrated (in the show) for his ridiculous good looks. (not surprising as it is Yang Yang whoo also does a great job with his acting chops)

Both MLs are celebrities and FLs ordinary people. The two clash at first but are forced to be together in some way (work vs. shared housing) and they fall in love.

Both MLs are celebrities, FLs a ordinary person who crosses paths due to working with the ML. Both MLs have past hurt in their lives and the two heal together.

Both MLs are celebrities, FLs an ordinary person who ends up working with or for him. The two fall in love, despite difficulties.

One is fantasy, the other is not, but both are about the growing relationship between an ordinary FL and a famous ML who initially clash but soon rely on each other, healing from past traumas.

similarities in ML's being popular idols and good looking.
FL s in both work temporarily as assistants to the ML but have their own professions/dreams.

MLs are popular idols who go through a rough patch,especially internally in their careers.
Misunderstandings in both shows lead to FL and ML fake dating though it is more in Smile to Life.
both shows have Famous ML and Common FL trope.

MLs are very popular , in Road to rebirth he is a huge established star who falls from grace. FLs become assistants and then lovers. ML falls for FL first. Story of RTR more detailed as it is a longer show.