Assuming Seth Mcfarlane actually DID do something innovative or influential at some point in his career, he did it on Family Guy. American Dad and The Cleveland shows are shitty repackagings of that show, and are both way less popular.
You have no idea how wrong you are sir. You can say that about The Cleveland Show but not about American Dad. The humor on American dad is much smarter than Family Guy. Look at the critic reviews for the last 20 or 30 Family Guy episodes....most of them are mixed to negative reviews while American Dad is getting good reviews. Cleveland show is a spinoff....American Dad is a whole different show made by the same people. Please tell me what shows were influenced by Family Guy because I don't see it. Family Guy is more popular because it's been around longer and sure younger kids will like it more. South Park seems way less popular compared to Family Guy but it's a much better show. it's like saying Bieber is better cause he's more popular.
Family Guy is NOT very original. It uses the blueprint from The Simpsons....a mom, a dad, a son, a daughter, a baby and a dog.....the dad drinks beer....Simpsons/King of the Hill....Peter can be a bit vulgar/offensive at times...Eric Cartman...he's fat....Homer is overweight.
Not much originality with Family Guy. The Simpsons creators have accused them of this. American Dad has an alien and a fish as 2 of it's main character's and no family dog. It's a completely different show. Roger and Stan are both better and funnier character's than Peter or Stewie as of right now. American Dad is what Family Guy should of been. A lot of kids and teens love Family Guy while us older and more mature people prefer American Dad.
Of course...my opinions......suck it if you don't like it.