ANSI (American National Standards Institute) for years (probably 50 years or more) was the standard for testing safety shoes. The ANSI Standard you site (1999) was the last revision they did for safety shoe testing. (The “-1995” standard was the previous revision to the “-1999”.) In 2005 (approximately, not positive about the year), ANSI decided not to continue supporting testing standards for safety shoes because (from what I understand ANSI determined) they said safety shoes were consistently meeting all standards and they did not see any reason to continue with the standard.
At that point, the safety shoe industry asked (I believe this is the story) American Society for Testing and Methods (ASTM) to take over the standard, which they did. The standards are essentially the same, with some minor changes in the standards and methods of testing. Thus the current standard is ASTM F-2412-2005, but it is essentially the same standard as the ANSI standards you site.
All shoe styles and brands that we sell are class 75, including the Rockport RK6736. In fact, all American brands commonly sold by HYTEST Distributors are Class 75. There hasn’t been an American brand Class 50 style sold in the US in over 40 years. (I’m old enough to remember the last one.)
You can read that shoe’s (RK6736) testing specs on the shoe label in the shoes. If you get a chance to look at the inside label of the shoes before they are worn very much, you may want to check out the label. It shows the testing Class 75 (I75 for Impact 75 and C75 for Compression 75) on the label, as well as other testing standards it has, like EH for Electrical Hazard, SD for Static Dissipating, M for Metatarsal, PR for Puncture Resistant. Etc.) RK6736 is an EH shoe and the label will have “EH” on the label.