Units from the Arena batch; Glenn, Lanza, Janice, Eleanor, Asto and Zekuu, and Leona are all great and common leads you see. They all give an increase in arena points, too.
AOE on Normal ATK leads is another team you see a lot. Glenn, Leona, Fizz, Mizerka are some of the units with this leader skill. Usually these teams have units like Mifune who can have builds with AOE on Normal ATK to stack with LS.
Angel Idols. For ultimate chance of survivability, use units who have chances to withstand a KO. Some units, like Janice, have chance for AI in their LS.
See if you have any of the Arena leads, as their LS are very useful for Arena, and pretty much just for Arena. Then build a team around them.