1. Create your table at
Google Spreadsheet.
-> example
2. Copy your table from Google Spreadsheet.
3. Paste your table to
Table Generator. (⚠️ Check 'Paste with formatting' option for your styling)
4. Click 'Generate' -> 'Copy to clipboard'. (don't paste this into Notion. it won't work yet.)
5. Generate
Notion Embedable URL with your copied HTML.
6. Paste the URL into your Notion Embed block.
Reference :
Taewoong's notion blog
Shaun