Seeking Data Source Alternatives for Sales Team Efficiency

Hey, I am looking for some data experts that would be open to have a conversation together with me about what is the best data sources to use to build great list of companies and contacts for our sales team. Currently I am using a set-up where Apollo is my main source of data and then I use Clay to enrich and push to HubSpot. We are reaching the limit of what Apollo can provide with our Dutch market and I need to find other alternatives for the data source. Important is that we can get the technographic data (Companies using WordPress). I have tested BuiltWith and Wappalayze but with bad results (they are not accurate enough). So anyone that could help me shed some light on what other options is out there except; Lusha, Zoominfo, Kasper, Cognism, I would really appreciate. I have already tested them as well but without good results.