The landscape of top bloggers can change rapidly due to shifts in trends, audience interests, and platform algorithms. However, here are some notable bloggers who have made significant impacts in the USA:

1. Perez Hilton – Known for celebrity gossip and entertainment news.
2. The Pioneer Woman (Ree Drummond) – Focuses on cooking, lifestyle, and family.
3. A Cup of Jo (Joanna Goddard) – Covers a range of topics including fashion, beauty, parenting, and relationships.
4. TechCrunch – A leading source for tech news and analysis.
5. Mashable – Focuses on technology, digital culture, and entertainment.
6. The Blonde Salad (Chiara Ferragni) – A fashion and lifestyle blog.
7. The Verge – Covers the intersection of technology, science, art, and culture.
8. Gizmodo – Focuses on technology, science, and design.
9. Smitten Kitchen (Deb Perelman) – A popular food blog.
10. Tim Ferriss – Known for lifestyle optimization, productivity, and self-improvement.
11. The Sartorialist (Scott Schuman) – A street style photography blog.
12. Cupcakes and Cashmere (Emily Schuman) – Covers fashion, lifestyle, and home decor.
13. Gal Meets Glam (Julia Engel) – A fashion and lifestyle blog.
14. Man Repeller (Leandra Medine) – Focuses on fashion, beauty, and culture.
15. The Everygirl – Covers career, finance, wellness, and more aimed at millennial women.
16. Copyblogger – Offers advice and insights on content marketing and copywriting.
17. Pioneer Woman (Ree Drummond) – Focuses on cooking, lifestyle, and family.
18. Oh Joy! (Joy Cho) – Covers design, fashion, and lifestyle.
19. Lifehacker – Provides tips and tricks for optimizing daily life.
20. Seth’s Blog (Seth Godin) – Offers insights on marketing, leadership, and personal development.

Remember that this list represents a snapshot in time, and the popularity and influence of bloggers can vary over time.