Regarding the lockring tool, I think there's only one kind of cassette lockring pattern, but there are several kinds of lockring tools. I think disc brake lockrings are different, so get one for cassettes.

Some are hollow and will fit anythinghttps://www.amazon.com/Park-Tool-FR-5-2-Cassette-Lockring/dp/B01LX3E08Z

some have a 12mm pin sticking out, which fits hubs with 12mm thru axleshttps://www.amazon.com/Park-Tool-FR-5-2GT-Cassette-Lockring/dp/B06ZYFVDJQ/

some have a 5mm pin, which fits hubs with a smaller hole.https://www.amazon.com/Park-Tool-Cassette-Lockring-FR-5-2G/dp/B01MSAUITJ