Which user should own files in /etc/pihole?

pi@noads:~ $ stat -c "%U %G %a %n" /etc/pihole/* | column -t
root    root      644  /etc/pihole/adlists.list
root    root      644  /etc/pihole/adlists.list.old
root    root      644  /etc/pihole/black.list
root    root      644  /etc/pihole/blacklist.txt
pihole  pihole    644  /etc/pihole/dhcp.leases
root    root      777  /etc/pihole/dnsmasq.d
root    root      644  /etc/pihole/dns-servers.conf
root    root      644  /etc/pihole/GitHubVersions
root    root      644  /etc/pihole/gravity.list
root    root      644  /etc/pihole/install.log
root    root      600  /etc/pihole/list.0.raw.githubusercontent.com.domains
root    root      600  /etc/pihole/list.1.mirror1.malwaredomains.com.domains
root    root      600  /etc/pihole/list.2.sysctl.org.domains
root    root      600  /etc/pihole/list.3.zeustracker.abuse.ch.domains
root    root      600  /etc/pihole/list.4.s3.amazonaws.com.domains
root    root      600  /etc/pihole/list.5.s3.amazonaws.com.domains
root    root      600  /etc/pihole/list.6.hosts-file.net.domains
root    root      600  /etc/pihole/list.7.dehakkelaar.nl.domains
root    root      600  /etc/pihole/list.8.gitlab.com.domains
root    root      644  /etc/pihole/list.preEventHorizon
root    root      644  /etc/pihole/localbranches
root    root      644  /etc/pihole/local.list
root    root      644  /etc/pihole/localversions
root    root      644  /etc/pihole/logrotate
root    root      644  /etc/pihole/macvendor.db
pihole  pihole    664  /etc/pihole/pihole-FTL.conf
pihole  pihole    644  /etc/pihole/pihole-FTL.db
root    root      644  /etc/pihole/pihole-FTL.db.bak
pihole  www-data  664  /etc/pihole/regex.list
root    root      644  /etc/pihole/setupVars.conf
root    root      644  /etc/pihole/setupVars.conf.update.bak
root    root      644  /etc/pihole/whitelist.txt