Replacement brake pads for Tektro HD-R210
It's the most common Shimano-originated pad form factor type, which doesn't have any one agreed-upon name but is often listed as "M525/515", "Deore Mechanical", "M475/425" and others. The "A10.11" is the Tektro model for the pads you have, which are what they call a metallic ceramic compound. You could just keep it simple and get more of those, but all the aftermarket pad manufacturers plus Shimano have offerings for this type in both metallic and organic/resin. There are a lot of questions here about organic vs metallic. Shimano B01S is an extremely cheap but good quality resin pad that would work.

The noise/chatter you mentioned is most often related to inadequate bedding. Metallic pads make it worse and will give some noise even when things are going right.