I attached many photos to try and give you guys a good frame of reference of her head shape, size, coat type, color, ear distance, etc. Slide 7 is her next to my brother's 1 year old purebred maine coon for a good size reference.
We thought mostly russian blue but she is clearly a mix and not purebred. The question is, mix with what? Chartreux? Korat? RB? British shorthair? Obviously she's probably >50% domestic shorthair.
Her coat is super soft and plush. She is relatively small/skinny but does carry a little "pouch" when standing, despite being a healthy weight and good diet/activity level. She elongates a ton when she wants to (I've seen her stretch her neck to giraffe proportions). She has greenish-yellow eyes, I think predominantly yellow but the green is noticeable when inspecting irl.
She is super affectionate, often playful (with lights, cables, scratching posts and towers, etc.) but also very calm. She is the most malleable cat I have ever met or had (you can physically move and manipulate and cuddle with her basically however you want to). When I come home from work, she will sprint into my room and wait for me to approach the bed to lay together, looking back expectantly. If I walk to the bathroom, she will follow me closely and likes to sit with my girlfriend and I if we are using the toilet. She really likes water (playing in tubs after people shower, jumping onto the tub when my girlfriend is sitting in a bath, climbing in the sink, sitting on the shower basin between the liner and curtain when we are showering, etc.). She is... uh, not what I would describe as smart. She is INCREDIBLY vocal.
It doesn't matter really, but we are curious. She is the best and super adorable and I love her. Go River :D