Clorox Active99™ are standard trichlor tablets. Trichlor occasionally has it's uses, but we don't recommend it for regular day to day usage.
Clorox XtraBlue® 3” Long-Lasting Chlorinating Tablets are roughly 70% trichlor and 30% other ingredients. In addition to the comments about trichlor above, we don't recommend using any product that combines several different chemicals/features. You have less control over dosing, adding things you don't need along with the things you do need, and it usually ends up costing more than purchasing the ingredients that you actually need separately.
Clorox XtraBlue® All-In-One® Chlorinating Granules appears to also be trichlor based. In addition to the commends on Clorox XtraBlue® 3” Long-Lasting Chlorinating Tablets we additionally don't recommend using granular trichlor because it dissolves too slowly. That can result in the granules sitting on the pool surface and causing damage.
We don't recommend using test strips of any brand. Test strips are inherently imprecise and also tend to have just completely wrong problems too frequently to meet our trouble free criteria.