1.) Doraemon
2.) Lupin the 3rd
3.) Daimos
4.) Gundam 0079
5.) Voltes V
This 5 is ranked in order of my tastes.... hell this is the only 5 i watched from that era 
You have some work to do, then:
http://skarohuntingsociety.blogspot.com/
Damn I thought Speed Racer was an American cartoon 
Guess that makes 6 ranked 6
On the contrary, Speed Racer/MachGoGo is Tatsunoko Production's flagship anime.
It is one of the most famous pieces of animation, period. You are to mention it in the same sentence as American cartoons, such as Looney Tunes and Mickey Mouse.
That's how famous it is. The entire planet knows MachGoGo.
For anime fans who do not what Tatsunoko Productions is, they literally founded modern anime as you know it. Many anime cliches started with this company, especially the Terrible Trio cliche from Yatterman, which to Americans, is best known by Pokemon's "Team Rocket." Although Pokemon is not a Tatsunoko show, Jessie, James, and Meowth are a homage and parody of Yatterman's Doronjo, Boyacki, and Tonzura.
Tatsunoko was a very influential anime company. If you are a fan of anime, watching any of their superhero shows from the 1960s and 1970s is essential, especially Gatchaman, whose first 2 seasons are available on BakaBT. The 3rd season is being subbed over at Skaro via Vortex Fansubs.