The toilet that is best for not clogging is the Toto Drake toilet and the American Standard Champion 4 toilet.
Both the Toto Drake toilet and the American Standard Champion 4 toilet are great for avoiding clogs as they both have very strong flushing power and also robust designs.
The American Standard Champion 4 toilet is known for it's powerful flush and it's wide trapway and the Toto Drake toilet and most particularly the CA Drake Chair Height Toilet is known for it's Tornado flushing technology as well as Japanese Quality.
I have a Toto Drake toilet in my house and so far it hasn't clogged and has a very powerful flush to it.
Although it's still possible even for the most powerful toilets to clog if you're not careful but these toilets are less prone to clogging than other less powerful toilets.
To minimize clogging, toilets with strong flushes and wider trapways are generally recommended.
Other good brands of toilets that even plumbers recommend are the Kohler, Toto, Gerber, and American Standard toilets which are time-tested and reliable.
Although each brand of toilets has certain strengths, each shares a reputation for reliability.
A good toilet should last you 20 years or more unless they get cracked.