Per LtM's rules
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Akebi's Sailor Uniform
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Tsuki ga Kirei
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Konohana Kitan
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IDOLY PRIDE
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New Game!
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If My Favorite Pop Idol Made It to the Budokan, I Would Die
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Miss Kobayashi's Dragon Maid
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Stars Align
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Tamayomi
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SK8 the Infinity
Though, I only started watching seasonals when I got back into anime in 2019 (yet 2017 still well represented). Honorable mentions to Hanebado, Harukana Receive, and Valkyrie Drive: Mermaid