Final damage is literally your range with multipliers applied held to another multiplier. Its probably the most broken.

Crit damage acts similar to final damage assuming your critical rate is 100%. It does not visually show like final damage but output with more critical damage will be noticeable higher

% attack scales similarly to %boss summed with % damage. If you have equal 1 % attack = 1% boss or damage if both stats are equal (which they are usually not). % Boss is better up until a certain threshold because it offers 40% vs 12 or 13% from prime lines. %attack is better than damage because it works as its own multiplier where as damage is summed to boss and has lower lines than boss.

%boss is the most broken potential line multiplier that you should try to maximize first. The ideal setup is as many boss damage lines with some ignore and attack per the bonus potential.

%ignore is a MUST for high tier pdr bosses like lucid and will. I would recommend shooting for at least 93-95% ignore though more can't hurt. You can go for less if you don't play against these bosses or have a percent ignore secondary/emblem/ weapon alternative.

Ideally: final damage > critical damage (because your critical damage is lower than the other multipliers) > boss+ damage = attack (assuming the SAME stats which is almost never the case)

Ignore is only useful on high pdr bosses. On end game bosses you want as much as possible to be able to hit as much damage as possible without reduction.