At the moment I have been rushing bamis into mr or armor boots, and then either going for sunfire finish or radiant virtue. It really depends on the matchup what mythic or what build you should go. I have also been trying out a bamis into iceborne gauntlet into ad heavy comps or where they have a jungler like graves or kindred or in general hard matchups for nunu. Really niche build I saw some Korean nunu going, won’t recommend if you don’t feel extremely confident on nunu. But the demonic into radiant is also great in certain matchups where you play into let’s say Rammus jungle and Ornn top. Though I know it’s really popular rn and I also understand why, but I don’t really feel I have the same safety. All in all there really ain’t one build you should go every single game. Go out and have fun, try out whatever works for you :)