Below is the lists I use for blocking which if all used it will equal over 2.5 million domains.
https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
https://mirror1.malwaredomains.com/files/justdomains
http://sysctl.org/cameleon/hosts
https://zeustracker.abuse.ch/blocklist.php?download=domainblocklist
https://s3.amazonaws.com/lists.disconnect.me/simple_tracking.txt
https://s3.amazonaws.com/lists.disconnect.me/simple_ad.txt
https://hosts-file.net/ad_servers.txt
https://github.com/uBlockOrigin/uAssets/blob/master/filters/badware.txt
https://github.com/uBlockOrigin/uAssets/blob/master/filters/annoyances.txt
https://github.com/uBlockOrigin/uAssets/blob/master/filters/privacy.txt
https://github.com/uBlockOrigin/uAssets/blob/master/filters/unbreak.txt
https://github.com/uBlockOrigin/uAssets/blob/master/filters/resource-abuse.txt
https://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts&showintro=1&mimetype=plaintext&_=213254
https://www.malwaredomainlist.com/
https://easylist.to/easylist/fanboy-annoyance.txt
https://raw.githubusercontent.com/HenningVanRaumle/pihole-ytadblock/master/ytadblock.txt
https://adaway.org/hosts.txt
https://v.firebog.net/hosts/Airelle-trc.txt
https://v.firebog.net/hosts/Easyprivacy.txt
https://v.firebog.net/hosts/Prigent-Ads.txt
https://v.firebog.net/hosts/AdguardDNS.txt
https://v.firebog.net/hosts/Easylist.txt
http://someonewhocares.org/hosts/hosts
https://zerodot1.gitlab.io/CoinBlockerLists/hosts_browser
https://hosts-file.net/fsa.txt
https://ransomwaretracker.abuse.ch/downloads/RW_DOMBL.txt
https://isc.sans.edu/feeds/suspiciousdomains_Low.txt
https://mirror1.malwaredomains.com/files/immortal_domains.txt
https://raw.githubusercontent.com/Ultimate-Hosts-Blacklist/cameleon_at_sysctl.org/master/clean.list
https://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts&showintro=1&mimetype=plaintext&_=212779
https://gist.githubusercontent.com/BBcan177/b6df57cef74e28d90acf1eec93d62d3b/raw/f0996cf5248657ada2adb396f3636be8716b99eb/MS-4
https://github.com/mitchellkrogza/Badd-Boyz-Hosts
https://github.com/lightswitch05/hosts
https://github.com/FadeMind/hosts.extras
https://github.com/azet12/KADhosts
https://adblock.mahakala.is/
https://ransomwaretracker.abuse.ch/downloads/CW_C2_DOMBL.txt
https://ransomwaretracker.abuse.ch/downloads/LY_C2_DOMBL.txt
https://ransomwaretracker.abuse.ch/downloads/TC_C2_DOMBL.txt
https://ransomwaretracker.abuse.ch/downloads/TL_C2_DOMBL.txt
https://pgl.yoyo.org/adservers/serverlist.php?hostformat=hosts;showintro=0
https://raw.githubusercontent.com/StevenBlack/hosts/master/data/UncheckyAds/hosts
https://github.com/chadmayfield/pihole-blocklists/raw/master/lists/pi_blocklist_porn_all.list
https://raw.githubusercontent.com/chadmayfield/pihole-blocklists/master/lists/pi_blocklist_porn_top1m.list