The Average Learner 
Here are some of the most common brokers available globally and my opinion about them: (I have used them personally)
Interactive Brokers (IBKR)
Who is it for?
Best for traders but suitable for everyday investors if you’re not inclined to a bit of complex UI.
| Pros | Cons |
|---|---|
| Best market coverage | Not user-friendly user interface |
| Best currency exchange rate | Have to apply for every instrument individually |
| Best trading tools | |
| Low fees | |
| Lots of technical indicators |
Charles Schwab
Who is it for?
Long-term or value investors.
| Pros | Cons |
|---|---|
| Free orders for most ETFs and US stocks | Stricter requirements if you want to have options feature enabled |
| Great customer service with real humans to pick up the line | Some features are US citizen-only |
| For US citizens you have auto-invest features | Only US Stocks |
| Easy-to-understand interface | Not as feature-rich as IBKR |
Read More - My Three Years Review With Charles Schwab
#TD Ameritrade is going to merge with Charles Schwab so it’s not included in the list here.
Webull
Who is it for?
Investors and traders who want a cleaner UI but still feature-packed.
| Pros | Cons |
|---|---|
| Free orders for most ETFs and US stocks | US stocks only, in some cases HK, Japan, etc. Not comparable to IBKR. |
| Easy-to-understand interface | |
| Low requirements for enabling options feature |
#Mother company is in China, and trading US stock has an underlying risk. (Just my take). You can look up Futu/Moomoo - a public Chinese company listed on Nasdaq that provides trading on the US market plummeted because of China government interference.
More will be added to the list…