Combine/concatenate values of multiple fields into one with additional formatting in modern drupal 8 9 10

As i wrote in response to this question Combining fields in Drupal 8 | Drupal.org:

Field Token Value creates a field type with a widget that allows defining the value containing tokens (which can be the values of other fields), with a simple field formatter to output the results of these tokens.

Credit to https://knowledgebase.ibuild.ph/drupal-use-tokens-display-combine-or-output-other-field-values-field for the link.

Side tip on using tokens, you can get one free choice of formatting for each token per content type by configuring the “Token” display mode.