Here is a list of some influential bloggers who are prominent in the U.S. blogging scene at this time.

1. Perez Hilton (Celebrity Gossip): Known for celebrity news and gossip.
2. The Pioneer Woman (Ree Drummond) (Cooking and Lifestyle): Famous for her recipes and ranch life stories.
3. Huffington Post (News and Opinion): A widely recognized news and opinion platform.
4. TechCrunch (Technology): Focused on tech startups and innovations.
5. TMZ (Celebrity Gossip): Covering the latest in celebrity news and scandals.
6. Mashable (Technology and Entertainment): A source for tech, digital culture, and entertainment news.
7. Business Insider (Business and Finance): Provides business news and analysis.
8. Smitten Kitchen (Cooking and Food): A popular food blog known for its delicious recipes.
9. Lifehacker (Productivity and Life Tips): Offers tips and tricks for everyday life.
10. A Beautiful Mess (Lifestyle and DIY): Focuses on DIY projects and home decor.
11. Zen Habits (Personal Development): Offers advice on simplifying life and finding happiness.
12. Cupcakes and Cashmere (Fashion and Lifestyle): Covers fashion, lifestyle, and beauty.
13. The Blonde Salad (Fashion and Lifestyle): A blog by fashion influencer Chiara Ferragni.
14. The Verge (Technology): A tech news site covering the latest gadgets and tech trends.
15. The Sartorialist (Fashion): A street fashion photography blog.
16. Neil Patel (Digital Marketing): Provides digital marketing and SEO tips.
17. Joanna Goddard (Lifestyle and Parenting): Focuses on parenting and lifestyle.
18. Fashion Toast (Fashion): A fashion blog by Rumi Neely.
19. TreeHugger (Environmental and Sustainability): Covers environmental news and green living.
20. Man Repeller (Fashion and Lifestyle): Known for its humorous take on fashion and style.

Please note that the popularity and influence of bloggers can change over time, and new bloggers may have emerged since my last update. To find the most current list of top bloggers in the United States, you may want to consult online rankings and resources specific to the blogging industry or conduct your research using search engines and social media platforms.