Welcome back ^^ oh ıts nice to ser that another Love interest caught your eye! (Well ıts not thay Isaac is bad but thanks for giving chance to others! ) as for the rest; spoilers!
Yes Anthony is built different from other LIs (Love interests) he is the emphaty related character afterall (isaac is power and simon is logic related). Tho raised in big family he is generally a good boy to mother nature either and always listen to it. Though that doesnt mean he is the perfect gem Anthony has his own flaws in his route even tho he is trying to be Understanding to main character. I hope you will still find him a good boy despite his flaws ^^
The reason isaac and nathainel were in part of Anthony route is sadly there is a undone job mc has to resolve that includes isaac too so anthony's route wont stray too far from important events but will also give you interesting perspectives ;)
Edit: oh jonas (spirits name) is implying that there is a undone task you need to finish and yes ıts related to isaac bıt ıts also kind of related to some other people too unfortunalety you should go for your main quest to ser what will it be about! and While jonas is very pretty he is also male ^^