As odd as it may seem the LAA title system is not that confusing, Title I is Aircraft Mech"s, Aircraft Inspect's, AMTO's, Aircraft
parts washer & the crew chiefs of these category's.
Title II is auto & ground service Mech's, building maintenance, etc etc.
Title III & IV are fleet service
Title V are stock clerks
A friend of mine hired in as a bagsmasher, then moved to parts washer then aircraft mechanic. His Title I seniority started
his first day as a parts washer, but his company time started his first day of work as a bagsmasher.