The Weightlifting Performance Standards by Dr Kilgore are quite motivating, giving targets to aim for and a sense of accomplishment when a level is reached.
I appreciate that these charts are based on classification systems used in competition, but are there respected figures for other popular type exercises, for example, bicep curls and lat pulldowns?
Even a basic list for a single bodyweight would be helpful (e.g. lat pulldowns: untrained 75kg, novice 90kg, intermediate.... for 100kg man) I respect the estimations of experienced lifters on this board just as much as many web pages, so a published chart is not necessary.