I'll discuss a little more about the HG freehubs and some things to pay attention to with your selection of a 26" rear wheel that will accept an HG compatible cassette. When freehub with cassette systems first came out from Shimano, 7 rear cogs (rear speeds) was the trend. The first system using the splined freehub body was termed "UniGlide" (UG). The spline pattern was slightly different and the cogs were secured on the freehub body by way of the smallest cog threading on to the end of the freehub body.
The next development was the current HG (HyperGlide) spline pattern body where the cassette was secured via a lockring threaded into the center of the HG freehub body. Seven rear speeds continued for a short time until an eighth cog was added to the cassette making an eight speed rear drivetrain. Significantly with the increase in rear cogs, came the need to make the freehub body wider to fit the extra cog. Thus, even today, there are wheels out there having the shorter, 7 speed freehub body. These wheels are limited to seven speed cassette. So this would be something to be mindful of when sourcing a wheel--especially a 26er, because that size predominated at the introduction of 7 speed cassettes and continues today within the budget bike market where even freewheels are yet common.
The FH-T610 hub is marketed for a 10 speed cassette. However the freehub body for 8, 9 and 10 rear speeds are the same width and will accept any HG compatible cassette with these number of cogs. They will take a 7 speed cassette if a spacer is first placed on the freehub body before the 7 speed cassette is mounted. All this to say that your choice of rear hub, despite marketed as 10 speed, will be fully compatible with 7+spacer, 8, 9 or 10 speed cassette. Even a "mountain 11" speed cassette will work on such an freehub body because of the design of the inner aspect of the cassette allows.
All in all, there are broad compatibilities between speed groups with HG freehubs, but you must watch out for the shorter 7 speed versions and the possible need for a spacer with the wider versions of HG freehub bodies (a third, even wider HG freehub body, the "road 11" is an option nowadays.