Some additions to the points made.
I think future mission passes can also include Founder's Amphirite too.
Personally I guess the next season 10 will have Amphirite rather the next Rivalate. Corrected. I never imagined they'll introduce Rivalate series right from the start of episode 6.
The Persona UQ 50 times title should come with the next maintenance, but it will be pretty tough if they didn't adjust the required count. Just imagine how many times we have to defeat it each day with only 2 weeks of UQ pickup term 
The title count title will most likely to come with the next maintenance too. I guess the required count will be 700 in global server.
In the future, we will have one title giving the stone for achieving 7.2 mil. cumulative points in the first UQ of EP6, this title will be available once EP6 starts, I guess. Another title gives the stone for achieving 5 mil cumulative points in Divide Quests, which will come somewhere in the EP6 schedule (probably in the part 2).
Aside from these, in JP server, they can exchange 900 Philosopher's Crest (not sure what this will be called in global) for a Founder's Amphirite, once per account. It's not clear whether this crest system will be implemented in global, but if they did, maybe we'd have have this exchange, somewhere in the late EP6.
So in short, we will have 3 in episode 5, from the mission pass season 9, Persona UQ grind and the total title count. And one will likely to come with EP6. Others will be pretty late, I suppose.
@coldreactive said in Trailblazer Questions:
Shouldn't there also be one for +35'ing the trailblazer or the profound weapon? Like the last weapons?
At least JP server doesn't have that.
EDIT: corrected the guess that the next mission pass season 10 will include Amhirite. It should be Key Rivalate.