Directories for prelaunch startups targeting eCommerce businesses?

I am working on a SaaS product that targets online businesses, primarily eCommerce businesses. Recently, I have made a prelaunch landing page to attempt to validate my product idea before I continue working on it further, and I've been looking for places to promote my startup to get early users.

I found that IndieHacker has a list of startup directories where I could submit my startup, but some of them require that the product be live, and my product isn't live yet. So far, I've submitted my startup for review to:

Betafy
10words
LaunchingNext
BetaList
AlternativeTO
KilerStartups
pitchwall.co (formerly Betapages)
crazyaboutstartups
The Startup Pitch
FeeDough
SaaSHub
StartupInspire

I got rejected from AlternativeTO today, since I don't have a live product. The other directories are still reviewing my application.

I don't know if my target market is found in any of these directories above, but do you guys know which directories do have those audiences, while accepting startups that are still in prelaunch phase? That would mean a lot.

Thanks