You share a very nice four Must Have watches options here.
The SM AT from Omega is a great choice which deserves more attention as I have said in my post. A lovely multi purpose watch with low profile can serve as a stealth watch so well or also as a dress watch.
Of course your Lange is a very classic and classy option for a dress watch.
Diving watches are versatile types which can be enjoyed in multiple occasions as well and both the Submariner and Tudor BB are great examples of the type.
Have a nice weekend! Abel