MLs competing with brother/father

ML's father (and other ancestors) were also in love with the immortal uke (unclear if they were ever lovers)

ML's older brother is uke's first (unrequited) love

Uke has an unrequited love towards ML's father (who knows and leads him on)

Ch.5 - Uke has an unrequited love towards ML's (now dead) father

The MLs are twins

Not father but ancestor. ML is very jealous of his ancestor, whom dragon!MC had a close relationship with

I think the father is the ML in this one?
FL is in a relationship with the father, but the son also likes her

FL was supposed to marry the (adopted) son but chose to marry the father, ML, instead

FL is married to ML's father. Their relationship starts when the father asks for a divorce

The MLs are father and son (pretty sure it ends poly)