What will they be mounted on?
If you are mounting on a pickup for off road use I would look at an All Terrain tire with more aggressive tread and side wall support and possibly more ply's.
Your tire 225/75/16 is equivalent to a 29.3/8/16 tire but you may be able to go up in diameter to give you a better load range and tread design. See this conversion site
You might consider upsizing to maybe a 31 10.5 16 or 32 10.5 16
I have an older suburban which came with 235/75/15 tires (talk about hard to find). I've been using it on some property we bought, clearing trees and brush, and just had a side wall puncture. After doing some investigating I decided to upgrade to a 31/10.5/15, which gives me more diameter ~2", width, and tire height plus higher load rating. I checked on several off road sites and all said I could upsize to this size tire without a problem.
By going to this size tire it gave me a lot more options. When I just queried sites using the 235/75/15 I only had a couple choices, FYI none at Walmart and only a couple at Sam's but would have to order.
I was getting ready to buy new ~+$600 for 4 off brand mounted but found a set of Michelins used ~50% tread left for $175 out the door. Tires looked in very good condition. This was a matching set which would have cost me +$700 mounted and balanced if bought new. Since my suburban is only being used for a work truck now I decided it was the best way to go. I also traded even up my 3 good tires for a spare of the same size.
Go to a couple good tire stores and get comparisons and tread designs.
If you plan on using this for short trips you might consider doing the same thing, buy a set of good used tires. If you plan on leaving them on you can get new.