Futurefonts.xyz - they share works in progress and new releases that people have been working on
pangrampangram.com - nice stuff, free trial fonts, a lot of people rlly like em
ohnotype.co - mostly funky odd fonts but very nice (some of their stuff is also on adobe fonts)
sharptype.co - more neutral not toned down stuff but still with some nice quirks
typefaces.pizza - i mean come on, they’re called Pizza - cool stuff - some more neutral but not boring and some a little more unconventional
abcdinamo.com - they have free trial versions of everything, pretty good stuff
klim.co.nz - also more toned down, classic stuff (with some exceptions), offer free test versions