I eat broth-based noodle dishes often. Maybe once every two or three days (I even review them on Instagram). I have to agree with sentiment - some of my favorite dishes, besides tonkotsu ramen:

Lhaksa - curry-based broth with thicker round noodles. Usually pretty spicy!

Pho Ga - chicken-broth based pho; nice departure from beef pho, and seriously delicious.

Khao Soi - a Thai dish; from what I've had of it, seems like a lighter Thai curry broth with noodles similar to lhaksa. Delicious! Had it my first time the other day.

Khao Soi is northern Thai dish. Originated in Chiang Mai or surroundings aka Lanna.

It is very difficult to find it in Thailand outside of Chiang Mai not to mention outside of Thailand.

The few times I’ve had it outside Chiang Mai it was very different. Too sweet, and crispy noodle was always a round, factory type.

But for sure it’s top 5 noodle dishes for me.

Other notable favourites:

- Taiwanese beef noodle

- Boat noodle with wonton

It'a not difficult to find in bangkok

>Lhaksa - curry-based broth with thicker round noodles. Usually pretty spicy!

Guessing you mean https://en.wikipedia.org/wiki/Laksa

It has two main variants based on coconut milk or tamarind. Also more variants, see article linked.