Gnuolane Free is identical to Gnuolane regular. If you find a version of Gnuolane Regular that looks significantly heavier than Gnuolane Free, it's an older version. Ask your font vendor for an update.
Disclaimer: All the fonts listed on this website are checked periodically to ensure they are freeware, shareware, or under an open source license. If you find on TreeHouse Fonts any font with commercial copyright please email me so that it can be immediately removed.