[b]44-94[/b] was the first Lakland model introduced in 1994. 44 refers to 4 strings and 34" scale. Similarly, [b]55-94[/b] is 5 strings, 35" scale, also introduced in '94.
[b]44-02[/b] and [b]55-02[/b] share the same logic, being Skyline models introduced in 2002.
[b]44-01[/b] and [b]55-01[/b] were also introduced in 2002, but they had to make them somehow different.
As for the other models, this is what I know:
[b]44-60[/b] and [b]55-60[/b] are j basses with 60's pickup placement (previously known as Joe Osborne),
[b]55-69[/b] is Tetsuya signature, 1969 being his birth year,
[b]44-64[/b] and [b]55-64[/b] are p basses similar to Fender 64 P (previously known as Bob Glaub),
[b]55-07[/b] model developed in 2007, discontinued,
[b]44-51[/b] is single coil p similar to Fender 51 P,
[b]Decade[/b] was developed as a 10 years anniversary bass.