Don’t level heroes solely based on the family bonus (with the exception of Springvale). The slayers in general are not that good outside of rush. Bobo also only really excels in rush attack or pushing high rank in challenge events.
For the sorcerers, it’s definitely going to be either Xnolphod or Dir Zuri. The choice will depend on the rest of your roster.
- If you have lots of average or slow speed purple heroes already maxed and emblemed, Xnolphod is probably the better choice. Xnolphod makes all purple average and slow speed heroes charge in 9 tiles. (also can make Alfrike+19 with lvl29 mana troop into 9 tiles)
- If you don’t already have lots of yellow healers (Prof Lidenbrock, Delilah, etc) I would do Dir Zuri
You don’t have to bring your sorcerer’s to +20 if you have lvl23 troops in purple and yellow. Just bring them to +18 or +19 and that will help save emblems for another sorcerer.
Out of the bottom 3 heroes you showed, I would ascend Akkorog first unless you have Odin maxed or are very deep in holy roster depth.
edit: one exception to what I wrote above is if your alliance runs purple tanks and you don’t have a top tier purple tank (e.g. Bera) or top tier rush attack purple tank (alfrike, maybe kunchen, etc). In that case prioritize war tank and ascend/emblem Senan.