Finding out specific processes that are running php commands shown in 'top -i'

I have been scouring the forums to find the next step in analysing what process specifically is requesting the usage of a php command shown when running the top -i in an Ubuntu 20.04 server cli.

After SSH'ing into a server that is reporting 100% CPU usage, I can see:

The obvious is that the mysqld is requesting a lot from the CPU. I can figure out what specifically is being ran that is costing so much memory within the mysqld command by finding its process ID pidstat -t -p {PID} 1 collecting its {TID} signing into mysql mysql -u root -p then selecting that process with a select query select * from performance_schema.threads where THREAD_OS_ID = {TID} \G.

I am wondering if there is an equivalent that will show me what specifically is requesting each of the php-fpm8.0 commands running that are shown in the list above?

perhaps a combination of

ps -ef | grep php

and

pstree -a -l -h -p  {ONE_OF_THE_PIDs}

would help. I'm not running php, but I am running postgres. Here's a sample output for you.

steve@AntHill2:~$ ps -ef | grep post
postgres    1115       1  0 08:39 ?        00:00:01 /usr/lib/postgresql/12/bin/postgres -D /var/lib/postgresql/12/main -c config_file=/etc/postgresql/12/main/postgresql.conf
postgres    1153    1115  0 08:39 ?        00:00:00 postgres: 12/main: checkpointer   
postgres    1154    1115  0 08:39 ?        00:00:00 postgres: 12/main: background writer   
postgres    1155    1115  0 08:39 ?        00:00:00 postgres: 12/main: walwriter   
postgres    1156    1115  0 08:39 ?        00:00:00 postgres: 12/main: autovacuum launcher   
postgres    1157    1115  0 08:39 ?        00:00:00 postgres: 12/main: stats collector   
postgres    1158    1115  0 08:39 ?        00:00:00 postgres: 12/main: logical replication launcher   
steve      17723   17577  0 20:10 pts/0    00:00:00 grep --color=auto post
steve@AntHill2:~$ pstree -a -l -h -p  1115
postgres,1115 -D /var/lib/postgresql/12/main -c config_file=/etc/postgresql/12/main/postgresql.conf
  ├─postgres,1153
  ├─postgres,1154
  ├─postgres,1155
  ├─postgres,1156
  ├─postgres,1157
  └─postgres,1158

If this does not help, try the arguments for pstree. If still no luck, then I recommend phpadmin or look in the php Stack Exchange forum.