Yes, asexual & aromantic folks need more presentation, for sure. I use the + to try to acknowledge more that the letters display, but I am glad you pointed it out.
Two-Spirited is distinct from bisexuality for a number of reason, both relating to the specifics of indigenous cultures and spiritualities, as well as it relates to gender identity. I’m bisexual but cisgender. Two-Spirit folks generally embrace a broader gender identity and/or expression.
I use queer myself but I also affirm the right and need for people to self-determine how they identify.