The phrase "an important listing" is correct and usable in written English.
It can be used when referring to a significant or noteworthy list of items, such as products, services, or information.
Example: "The website features an important listing of all the upcoming events in the city."
Alternatives: "a crucial list" or "a significant catalog".
Meanwhile, Phil is busy trying to land an important listing with a difficult client, Jay struggles to teach Gloria and Manny how to ride a bike, Manny is surprisingly great at it and yet Gloria continues to try, and Mitchell and Cameron meet a charming mysterious neighbor.
The French GIS-IreSP has an important listing of public health research projects, although not classified by field [ 53].
See below for an important list of recently processed (and soon-to-be processed) collections.
That is an important list even without the more than 600 wooden Victorian buildings that have made the town famous.
FEMA's external advisory council also left an important list of recommendations for the agency.
When Clinton, unlike Glamor girl Gillibrand, isn't on an important list of America's big political thinkers, does it matter?
These proteins join an important list of critical factors needed for the controlled production and release of insulin-family proteins.
Combined ChIP-seq/RNA-seq studies in IL-10 stimulated macrophages have generated an important list of putative effectors of the AIR (the AIR factors) that are activated by STAT3 and which potentially suppress the expression of pro-inflammatory genes.
Proteomic approaches using isolated Chlamydomonas cilia have generated an important list of ciliary components albeit with the caveat that low abundance and membrane proteins are not well represented (Pazour et al. 2005).
The team began by downloading the data associated with 431 female models who were listed as "new faces" on the Fashion Model Directory, an important industry listing website.
In an important work (listed in the bibliography), P. and T. Ehrenfest also offered a reading of the Boltzmann equation of approach to equilibrium that avoided recurrence objections.
