Yes you can! The UK Global Talent visa enables you to take your family members with you. Your extended family doesn’t count though. So you can bring your spouse or unmarried partner (if you have been in a serious relationship for at least two years, for instance you can show that you’ve been paying bills and rent together etc.) and any children under 18 years old.
The visa application process for them will be similar to your Stage 2 application, meaning that your loved ones will have to apply directly to the Home Office. They will also have to pay the Immigration Health Surcharge for each year that they’re planning to stay in the UK.