Is it known which titans follow in power to the Founding Titan?
It is noted that the Founding Titan is the strongest one.
It isn't known in the manga/anime how the Titans are ranked, but statistics do exist for certain titans.
Colussus Titan Statistics spoilers below

Power 11/10
Speed 3/10
Size 11/10
Elusiveness 10/10
Threat 10/10

Armored Titan Statistics spoilers below

Power 8/10
Speed 6/10
Hardness 11/10
Machoness 10/10
Legend 10/10

Female Titan Statistics spoilers below

Power 6/10
Speed 8/10
Hardness 10/10
Combat 11/10
Sexiness 10/10

Beast Titan Statistics spoilers below

Power 7/10
Speed 5/10
Ruthless 8/10
Smart 11/10
Wildness 10/10