I wonder how many deals that are already series A size opportunities are out there which have so far avoided the typical tech startup route of picking up seed f

I wonder how many deals that are already series A size opportunities are out there which have so far avoided the typical tech startup route of picking up seed funding/ advisors which will avoid any introduction issue? It certainly is possible, such as bootstrapping to early profitability or taking some money from those outside of regular crowds. The question would be I guess is this group big enough that it would make sense for VCs to put people on to sift through the volume of pitches to find those companies?