Texan -- are you asking about specific 2005 teams or team organizations?
History speaks for itself if you're looking for an organization to join, and the names apply to both 16U and 18U ---- DBAT, Dallas Mustangs, Dallas Tigers <--- no particular order. However, these groups may not necessarily have age-pure teams in 15U or 17U each year. Strong 17U teams include the Blackhawks & the McKinney Marshals -- to name a few.