You’ve collected some great heros - congrats. I’d conserve your Ascension materials and not bother taking any more S1 5* heros beyond 3.70 if you don’t have their costume/s. They just don’t pack the punch the use to… I see you have CDomitia though, who could make your defense team once maxed.
You could try
Elk, Gravy, Pengi, Celidana, Sartana
You can never have enough healers, so good to see lots of 4* healers - which comes in handy during W3K, tower events etc.
@RandaPanduh gives much better advice than me. GL in your E&P journey.
You also have 10 5* that can go into next SE if they offer a hero that fits your needs.
For the 4*
Azmia could use the emblems if you have some for her
Sonya makes a good use of the embelms especially that you have her costume
Chao is a mana controller and you have his costume so he deserves the embelms and LB.
I dont think there is a need for a duplicate Wilbur (but you can take more opinions here)
Gretel is another mana controller and she is quite good after embelms and LB.
Gobbler as your minion destroyer option he could need a push in stats in order to fire at least twice
Duplicate 4* healers are okay, they will be helpful in W3K as mentioned by @Sarah2
He is always on my red mono team for titans and gets use in events to normalize the high slashes but other than I don’t find a lot of use for him…
In wars, I stopped using him now that I have several hit 3 heroes… unless I take a dispeller and remove the shared damage from the enemies…
I get your point on the double Wilbur with costume though! That would be annoying!