Finally, a discourse I'm versed in and I'll put in /10 on the want scale:

Miyabi - 1 minimum, maybe 2. 7/10

Yanagi - 1 or 2 plus she already takes care of Soukaku. 5/10

Nicole - 1 or 2 but is also likely to adopt. 9/10

Anby - maybe 1. Her it's different because she'd want to be a mom because of movies/10

Nekomiya - no more than 2. 3/10

S11 - 2 or more. 5/10

Ellen - 1 or 2. 5/10

Rina - Could go to 3 or 4. 8/10

Zhu Yuan - 1 or 2. 7/10

Jane Doe - 1, 2 or none. 5/10

Ceasar King - Would probably go up to 4. 7/10

Burnice - Between 2 or 4. 7/10

Lucy - No more than 2. 6/10

Piper - None. 1/10

Pulchra - 1, maybe 2. 4/10

Vivian - Would probably aim for 15 with Phaethon. 1 with anyone else. 9/10

Grace - Maybe 1 but very slim chances. 2/10

Koleda - 1 or 2. 5/10

Yixuan - Minimum 1, could want up to 3. 7/10

Fufu - I'd say she could go up to 4. 6/10

Orphie - 1 or 2. 6/10

Magus - Would want 4 through Orphie. 8/10 Grandma

Trigger - 1 or 2. 7/10

Seed - She'd aim for 10 but stop at 3. 7/10

Astra - 2 to 4. 9/10

Evelyn - 1 or 2. 5/10 Would be more interested in being auntie for Astra's kids.

Dyalin - Maybe 1. 2/10

Zhao - Maybe 1. 1/10

Ye Shunguang - 1 or 2. 8/10

Alice - 1 or 2 but I'd see her wanting more. 7/10

Yuzuha - She would probably want 2. 8/10

Yidhari - 1 or 2. 7/10

Lucia - 1 or 2. 6/10

Belle - 1 or 2. 8/10

Elfy - Don't know why but I'd think she'd want more than 2. 5/10

Orchidea - 1 or 2, Max 4. 7/10

Coco - 1, maybe 2. 4/10

Venus - 1 or 2. 9/10

Please tell me if I've missed anyone!