Why the best origin changes
Different origins begin with different stats. The optimizer computes the level required to meet your minimum attribute requirements, rather than assuming every class starts at level one. It does not make claims about the “best” weapon or playstyle.
The two Tarnished Pack starting classes are separate paid content on most platforms and are optional in this tool. Their starting attribute vectors match the independently published Origins table; this comparison is a public reference cross-check, not an original game-client capture.
Sources: Bandai Namco patch 1.17 (new classes) · Eldenpedia origin stats (12 classes).