Okay, so you've seen these already...
These are some others:
Search Engine
Search Engine Optimization (SEO)
Search Engine Marketing (SEM)
A/B Testing
Website development (No-code)
Website & content management
Social Media
Social media management
Social Media paid ads
Influencer marketing
Content Marketing
Video Marketing
Audiovisual production – from script to publishing
Blogging
Email Marketing
Automation
Lead generation
Data analysis
Data visualization
Metrics reports
Areas of opportunity
Areas for growth and learning
Affiliate marketing
Programming
Web design
UX Design
E-commerce
These are some of the things that I'm still working on and will defintely improve as time goes on.