Novels that feature unhealthy sibling rivalry with the MC.

These siblings are:
-fully blood related; 嫡(di) legitimate child
-half-siblings; bastard child; child from new/previous marriage; 庶(shu) illegitimate child
-adopted
-switched with the MC 
-step siblings (haven't found any like this)

And they want to:
-kill him
-take the MC's inheritance
-replace MC's position in everyone's hearts
-have the MC suffering and hated

Don't be afraid to recommend me GLs (or anything else). Fairly new to NU so I don't know any.

If something doesn't belong on the list, they're most likely there because I skimmed over the summary or the spoilers and guessed that it would have the "sibling vs mc" conflict. Please let me know if something doesnt belong here.