[Matrixbeast]

For post Ex-Aid seasons:
Build is considered good. It has a strong story that paces itself well. Great characters and doesn't meander too much.
Zi-O his hot garbage. Having the same basic premise of Decade (Protagonist that's destined to be evil going around through various points in Heisei Rider history obtaining powers and learning lessons), and making the same mistakes of thinking a confusing plot means it's good. It disregards it's own rules it sets up and just has no idea what it's trying to do.
Zero-One is average. Despite the hype of being "THE FIRST REIWA SERIES!" it doesn't do anything special concerning the franchise. COVID also fucked things up a bit for it, but ultimately, it's a decent enough season.
Saber was Saber.
Revice was also trash, but with potential that they opted not to follow, making it a disappointment as well.

The shows between Ex-Aid and Geats, excluding Build, were honestly all let downs. Saber is the most mixed bag, as while I didn't find it enjoyable, others felt it picked up in the latter half.
Compared to what came before, well, it's hard to say. I feel Zero-One is on par with Wizard and Drive in terms of "Adequate", while Zi-O and Revice dance around Ghost's quality. I consider Build to be on par with Ex-Aid as a higher quality series.

Like I said, Saber is a mixed bag, and answers vary depending on who you ask, while the other 4's general consensus are what I listed.