I use:
Stamparm ipsum level 3 (level 1 gave me FP):
https://raw.githubusercontent.com/stamparm/ipsum/master/levels/3.txt
Borestad AbuseIPDB-100-ALL (all ips with a 100% abuse score):
https://raw.githubusercontent.com/borestad/blocklist-abuseipdb/main/abuseipdb-s100-all.ipv4
LittleJake also has some nice lists: AbuseIPDB-100:
https://raw.githubusercontent.com/LittleJake/ip-blacklist/main/abuseipdb_blacklist_ip_score_100.txt
I also have curated lists that I block with all or a selection of ports:
Combination script with a few lists:
https://github.com/chriscapisce/iptables-personal-blacklists/blob/main/local-antispam-personal-blacklist.sh
Combination script with a selection of the worst AS offenders:
https://raw.githubusercontent.com/chriscapisce/iptables-personal-blacklists/main/local-asn-personal-blacklist.sh
Combination script with a selection of countries to block from specific ports:
https://raw.githubusercontent.com/chriscapisce/iptables-personal-blacklists/main/local-countries-personal-blacklist.sh