[2]: 381 Generally speaking, earlier Alexandrian manuscripts are category I, while later Byzantine manuscripts are category V.[2]: 381–382 Aland's method involved considering 1000 passages where the Byzantine text differs from non-Byzantine text.
The Alands did not select their 1000 readings from all of the NT books; for example, none were drawn from Matthew and Luke.
The Alands do not classify 𝔓25, stating this is due to the Diatessaric character of text (i.e. the four Gospels combined into a single narrative).
The Alands references are one of the most widely used references for New Testament textual criticism in theological studies today along with the UBS and continues to receive regular updates as more manuscripts are found and become available for study.
Furthermore, updates do not happen in real time although efforts have made rapid progress in bringing the data online allowing for a more real-time access to research and discussion in ways no other text from antiquity has ever been done with the scale and scope of evidentiary materials.