Liz has only shown attraction to protagonists in canon, so it's hard to say she actually has a type beyond "hard-working" and possibly "self-sacrificing", but yes, I will have her fawn over him yet!

As for the famil, uhh... I did not plan out the family at all beyond being "a rich family that gets driven to school and is a high-pressure environment", but let's see... Please wait while I make stuff up...

The Leroy family is basically running a megacorporation that started off in real-estate, moved on to factory manufacturing, and then eventually producing their own cars and vehicles. What really made them a powerhouse in Eddan however, was their contributions to public transportation, and these days many of the electric cars, busses and subways have the crown symbol, marking them as Leroy brand.

Ironically, Isabella is claustrophobic and as a result can't actually use public transport on the basis of it being too crowded.

That being said, what with being a "generic megacorporation", they probably dabble in a bit of everything. If it can make the company stronger, it will be done! The family itself is technically french, though.