A Plain Cap Table Template

Looks interesting.

FTR, here are direct links for download PDF[0] (printed preview), ODS[1] and XLSX[2] (spreadsheet files).

[0] https://docs.google.com/spreadsheets/d/1ZNc95YH5nOO0tmhPjFw8...

[1] https://docs.google.com/spreadsheets/d/1ZNc95YH5nOO0tmhPjFw8...

[2] https://docs.google.com/spreadsheets/d/1ZNc95YH5nOO0tmhPjFw8...