Aside from the official government sources, which would obviously be pro-China (why criticize yourself?), I think the foreigners who are pro-China tend to fall into these categories:

• business people (they must have invested in China or have engaged with China professionally in some way, and they would rely on a strong China to make back their own investment)
• fun travelers (they just want to find delicious eats and have fun)
• Marxist-Leninist ideologues (they tend to be western social critics who are very critical of western society and will look for examples to support their own ideology)
• western political dissenters (these people are fed with some aspect of western politics in some way)

Foreigners who are anti-China tend to fall into these categories:

• politicians (they have to know what the people want to hear and represent the people, so that they can get elected or re-elected; they have to make the people happy, make corporations happy.)
• business/political/tech/military rivals (they want dominance in these areas)
• people who are negatively impacted by the outsourcing of manufacturing jobs because their own country's capitalists want cheap labor
• people who have to make click-bait for a living
• Chinese political dissenters (the enemy of the enemy is friend)