two types of method vs two types of methods

Some examples from the web:

• Monitoring for the presence of PCDD/Fs and dioxin-like PCBs in foodstuffs may be performed with two different types of analytical methods:
• Two of the four types of method described in ISO 10634 (4) would seem to be suitable for attempting to disperse test chemicals for simulation testing; they are the use of emulsifying agents and/or of ultrasonic energy.
• Two types of prosciutto, all the vegetables.
• Two types of phase separation section are discussed.
• The EDPS questions the difference between the two types of data bases: it is questionable whether the dormant database constitutes a real archive, with different methods of storage and retrieval of data.
• There are two types of diabetes, But only one type of caring.
• So there's two types of ways to win strikes and concessions.
• The rights conferred by this Charter will have at least two types of beneficiary.
• There's two types of guys in this world, Shelly.
• There are two types of haemorrhage, arterial and venous.
• In this regard the interchangeability and competition between the two types of fasteners was also assessed.
• Okay, so there are two types of physical quantity.
• The two types of agreement are not therefore intrinsically linked.
• The Communication's paper considers two types of option.
• Give me two types of radar-control guidance.
• However, a distinction should be drawn between the responsibilities of those two types of organisation.
• At international level the Commission envisages two types of action.
• There are two types of PTSD.
• I've experienced two types of evil in this life, Officer Sarchie.
• I make two types of bed for what you want.

Some examples from the web:

• Monitoring for the presence of PCDD/Fs and dioxin-like PCBs in foodstuffs may be performed with two different types of analytical methods:
• Two of the four types of method described in ISO 10634 (4) would seem to be suitable for attempting to disperse test chemicals for simulation testing; they are the use of emulsifying agents and/or of ultrasonic energy.
• Two types of prosciutto, all the vegetables.
• Two types of phase separation section are discussed.
• The EDPS questions the difference between the two types of data bases: it is questionable whether the dormant database constitutes a real archive, with different methods of storage and retrieval of data.
• There are two types of diabetes, But only one type of caring.
• So there's two types of ways to win strikes and concessions.
• The rights conferred by this Charter will have at least two types of beneficiary.
• There's two types of guys in this world, Shelly.
• There are two types of haemorrhage, arterial and venous.
• In this regard the interchangeability and competition between the two types of fasteners was also assessed.
• Okay, so there are two types of physical quantity.
• The two types of agreement are not therefore intrinsically linked.
• The Communication's paper considers two types of option.
• Give me two types of radar-control guidance.
• However, a distinction should be drawn between the responsibilities of those two types of organisation.
• At international level the Commission envisages two types of action.
• There are two types of PTSD.
• I've experienced two types of evil in this life, Officer Sarchie.
• I make two types of bed for what you want.