I started reading progression fantasy on Royal Road earlier this year (a site for posting web serials). Here’s my current follow list (excluding stories that are on hiatus):

• The Runic Artist — isekai, rune-based crafting, good mix of action and slice-of-life
• The Broken Knife — Kobold MC with a dragon companion, dark but compelling read, excellent worldbuilding
• Demon World Boba Shop — cozy isekai, nice characters
• Dual Wielding — slow burn, tale of two friends (both very talented), writing is good, action scenes get dark and intense
• Legends and Librarians — cozy romance, magical library (not litrpg/progression), plenty of cute creatures
• An Otherworldly Scholar — isekai, teacher MC, good worldbuilding, nice romance, great characters, plenty of twists, adventure and danger, especially enjoyed the slice-of-life stuff
• Archmage from Another World: Gaining Administrator Access — isekai from another fantasy world, lighthearted fun with good set of characters, no looming world-level threats so far
• Underkeeper — MC is a recent magical academy graduate, good at magic but works as underkeeper (no money/connections to join adventurer groups), got darker than I’m comfortable with, but loved the characters and the demon companion
• Immovable Mage — good worldbuilding, characters, plot twists and detailed magic system, clever use of plot events pushes MC towards OP, would suggest to read at least till the end of 2nd arc
• Level One God — likeable MC, cool magic stuff I haven’t seen before, some bad moments are really dark, good writing
• Spire’s Spite — criminally underrated with only 100+ followers, mostly been spire climbing so far, good magic system, dark and has some stuff I don’t like but overall I’ve enjoyed it
• Blood Curse Academia — overall I enjoyed the combination of action, learning and mystery, but a lot of weird coincidences and stuff didn’t make sense
• Mana Mirror — loved the concept of mana garden and the myriad customization options, writing and plot was easy to follow, third volume is the best so far
• The Maid Is Not Dead — writing felt like traditionally published epic fantasy with progression elements, slow burn but events are starting to escalate
• Dark Lord’s Last Call — MC’s soul is swapped with the dark lord, plans to open a tavern, enjoyable light-hearted read
• Orphan — I usually ignore the litrpg math but this one takes it a bit too far! characters all have flaws (though sometimes it becomes a bit too irritating), good worldbuilding and mystery
• Rules of Biomancy — 70 year old herbalist MC with a secret past comes across two isekai-ed people in danger of dying and decides to help, enjoying a lot