Repology: maintainer bkysela@gmail.com

Metapackage filtering in Repology is very flexible, so you can combine all kinds of conditions. But here are some preset queries to start with:

Maintainer	Score	Common packages
ss23@ss23.geek.nz	100.00	2
benoit.knecht@fsfe.org	66.67	2
kopfkrieg@aur	25.00	1
merzlyakov@aur	25.00	1
mimas@slitaz.org	16.67	2
astroprofundis@aur	15.38	2
ebzzry@ebzzry.io	10.00	2
rbrito@ime.usp.br	9.52	2
ghostbar@debian.org	9.52	2
perfinion@gentoo.org	8.70	2
noodles@earth.li	8.33	2
nemesys@aur	7.69	1
codyopel@gmail.com	6.90	2
tripolar@gmx.at	4.76	2
dcoppa@openbsd.org	3.57	2
unera@debian.org	3.03	2
angrypenguinpoland@gmail.com	1.79	2
bisson@archlinux.org	1.68	2
jakub@jirutka.cz	0.76	2
aksr@aur	0.55	2
ovruni@gnu.org.pe	0.51	2
darktemplar@altlinux.org	0.31	2
fallback-mnt-crux_34@repology	0.16	2
fallback-mnt-crux_33@repology	0.15	2
fallback-mnt-openindiana@repology	0.14	2

Maintainer	Score	Common packages
fallback-mnt-crux_32@repology	0.14	2
fallback-mnt-haikuports_master@repology	0.10	2
fallback-mnt-wikidata@repology	0.09	1
fallback-mnt-entware@repology	0.09	2
arojas@archlinux.org	0.08	1
fallback-mnt-gobolinux@repology	0.06	2
fallback-mnt-exherbo@repology	0.05	2
ports@freebsd.org	0.04	2
felixonmars@archlinux.org	0.04	1
fallback-mnt-epel_6@repology	0.03	2
nomaintainer@macports.org	0.03	2
fallback-mnt-epel_7@repology	0.03	2
fallback-mnt-gnuguix@repology	0.03	2
ubuntu-devel-discuss@lists.ubuntu.com	0.02	2
pkgsrc-users@netbsd.org	0.02	2
fallback-mnt-opensuse_leap_42_3@repology	0.02	2
fallback-mnt-pclinuxos@repology	0.02	2
fallback-mnt-opensuse_tumbleweed@repology	0.02	2
fallback-mnt-pld@repology	0.02	2
fallback-mnt-opensuse_leap_15_0@repology	0.02	2
fallback-mnt-mageia_6@repology	0.01	2
fallback-mnt-mageia_cauldron@repology	0.01	2
fallback-mnt-rosa_2014_1@repology	0.01	2
fallback-mnt-rosa_2016_1@repology	0.01	2
fallback-mnt-fedora_26@repology	0.01	2

Maintainer bkysela@gmail.com