PCIJ's (Philippine Center for Investagative Journalism) online article entitled Republic of Pancit reveals these three noodle dish contributions of the Ilonggos in the Philippine gastronomy scene.
The most famous (and easily "accessible") contribution of all and named after one of the city's districts, La Paz batchoy would probably be among the icons that would represent Ilonggos.
Teds Old Timer
Deco's Original
Pancit Molo
Another dish named after one of the city's districts is basically is of Chinese "descent" but with Ilonggo flavour.
Pancit Efuven
The least known of all, efuven is the Ilonggos answer to pancit canton, bihon or sotanghon or even pasta.