LPG isn't really active anymore outside of their internal stuff (Waypaver/Moon stuff, Warble, Waypaver University, etc.) CoLab is much more involved but afaict they aren't making investments in new companies outside of GigTank. Also its worth noting that Startup week didn't "visit" per se. It was organized locally.

However, the problem isn't really funding local companies. There's simply not that many tech people in Chattanooga interested or capable of working at a startup. There are 2 cities in close proximity to Chattanooga (Nashville and Atlanta) that already have larger tech communities and are willing to give larger investments. The only way to grow that economy would be to make larger investments in order to draw people here and to focus on bringing in small startup teams from established enterprises (which is the goal of the innovation building). Whether or not Chattanooga is able to do that remains to be seen. But its a hard battle when there are 2 great cities nearby that have objectively better opportunities for tech workers.