Correct permissions and groups for the project?

Question

System administration

I myself set up like this for LAN

drwxrwsrwx+    6 bonbon www-data   4096 Apr 26 22:35 assets
-rwxrwxrwx+    1 bonbon www-data    530 Apr 14 14:53 bash.exe.stackdump
drwxrwsrwx+    2 bonbon www-data   4096 Jun 21 15:54 bin
-rwxrwxrwx+    1 bonbon www-data   5086 Jun 30 14:46 composer.json
-rwxrwxrwx+    1 bonbon www-data 420963 Jun 30 14:47 composer.lock
drwxrwsrwx+    5 bonbon www-data   4096 Jun 30 21:18 config
drwxrwsrwx+ 1193 bonbon www-data  36864 Apr 29 17:40 node_modules
-rwxrwxrwx+    1 bonbon www-data   1024 Apr 29 17:40 package.json
-rwxrwxrwx+    1 bonbon www-data    599 Apr 25 23:02 phpstan.neon
-rwxrwxrwx+    1 bonbon www-data    599 Apr 25 23:02 phpstan.neon.dist
-rwxrwxrwx+    1 bonbon www-data   5662 May 26 08:50 phpunit_example.xml
-rwxrwxrwx+    1 bonbon www-data   5551 Jun 21 15:54 phpunit.xml
drwxrwsrwx+    9 bonbon www-data   4096 May 18 00:13 public
-rwxrwxrwx+    1 bonbon www-data   8347 Jun 30 14:35 readme.md
-rwxrwxrwx+    1 bonbon www-data 583960 May 17 18:35 security-checker.phar
drwxrwsrwx+    5 bonbon www-data   4096 Jun 29 20:38 src
-rwxrwxrwx+    1 bonbon www-data  19073 Jun 30 14:47 symfony.lock
-rwxrwxrwx+    1 bonbon www-data    136 Apr 21 02:32 typescript
drwxrwsrwx+    4 bonbon www-data   4096 Apr 30 00:46 var
drwxrwsrwx+   70 bonbon www-data   4096 Jun 30 14:47 vendor
-rwxrwxrwx+    1 bonbon www-data   1108 Apr 30 10:54 webpack.config.js
-rwxrwxrwx+    1 bonbon www-data 298149 Apr 14 14:53 yarn-error.log
-rwxrwxrwx+    1 bonbon www-data 339370 Apr 29 17:40 yarn.lock

on demo and prod I put 775 and www-data for places where you need to write and read, such as logs, file uploads, etc. The rest is 664.
However, how about this:

-rwxrwxr-x  1 www-data www-data       0 Jun 19 17:36 2
drwxrwxr-x  9 www-data www-data    4096 Jun 30 16:42 app
-rwxrwxr-x  1 www-data www-data    1686 Jun 19 17:36 artisan
drwxrwxr-x  3 www-data www-data    4096 Jun 19 17:36 bootstrap
-rwxrwxr-x  1 www-data www-data    1738 Jun 30 16:42 composer.json
-rwxrwxr-x  1 www-data www-data  215955 Jun 30 16:42 composer.lock
-rwxrwxr-x  1 www-data www-data 1854600 Jun 19 17:36 composer.phar
drwxrwxr-x  2 www-data www-data    4096 Jun 19 17:36 config
drwxrwxr-x  5 www-data www-data    4096 Jun 19 17:36 database
-rwxrwxr-x  1 www-data www-data    8145 Jun 19 17:36 oldDashboard.txt
-rwxrwxr-x  1 www-data www-data    1125 Jun 19 17:36 package.json
-rwxrwxr-x  1 www-data www-data    1040 Jun 19 17:36 phpunit.xml
-rwxrwxr-x  1 www-data www-data    1581 Jun 19 17:36 Prerequisite
drwxrwxr-x 11 www-data www-data    4096 Jun 19 17:36 public
-rwxrwxr-x  1 www-data www-data    3550 Jun 19 17:36 readme.md
-rwxrwxr-x  1 www-data www-data    3550 Jun 19 17:36 README.md
drwxrwxr-x  5 www-data www-data    4096 Jun 19 17:36 resources
drwxrwxr-x  2 www-data www-data    4096 Jun 30 16:42 routes
-rwxrwxr-x  1 www-data www-data     563 Jun 19 17:36 server.php
drwxrwxr-x  6 www-data www-data    4096 Jun 20 15:41 storage
drwxrwxr-x  4 www-data www-data    4096 Jun 19 17:36 tests
drwxrwxr-x 52 www-data www-data    4096 Jun 30 20:36 vendor
-rwxrwxr-x  1 www-data www-data     549 Jun 19 17:36 webpack.mix.js
-rwxrwxr-x  1 www-data www-data   11862 Jun 19 17:36 worker.log

I looked at the server of one site with which I worked.
also sometimes confused how to correctly set the rights?
symfony.com/doc/current/setup/file_permissions.html
https://symfony.com/doc/3.3/setup/file_permissions.html
or just give chmod -R 775 and chown -R www-data? Or root:www-data?
Please tell me how to set it up correctly, how do you set it up?
Answers like
https://stackoverflow.com/questions/23540083/file-...
777 for the entire project.

Answer 1

the question is essentially meaningless, because there are many options depending on how the server is started and puffed.