Because you've stated at least twice now that Kremer is the best #4 starter in the league, I decided since I'm snowed in, to waste 1 hour of my life researching this for you and also me.
Rays - Baz/Bradley (I think everyone would take the Rays).
Blue Jays - Kikuchi (Had a .41 better FIP than Kremer)
Yankees - Stroman (Yankees easy here, obviously).
Red Sox - Houck (I'll give Kremer the win here, despite Houck having a better FIP). +1
Twins - I don't think they even have one yet. (Kremer obvious win here). +1
Tigers - Faedo (Kremer easy win here) +1
Guardians - Logan Allen (I'd take Allen here pretty easily)
White Sox - Soroka (Obvious Kremer win here) +1
Royals - Lynch (Kremer easy win) +1
Astros - Urquidy (I would take Urquidy here given a better track record, but I'll call it a 'push') +.5
Rangers - Jon Gray/Mahle (Rangers win here pretty easily)
Mariners - Woo/Miller (Easy Mariners win)
Angels - Sandova (Kremer win here) +1
Athletics - Not even wasting my time. (Kremer win) +1
Braves - Sale (Braves win)
Phillies - Suarez (Pretty easy Suarez win)
Marlins - Garrett (Braxton garrett breakthrough last 2 years. win marlins)
Mets - Quintana (This is an easy Quintana win given the track record)
Nationals - Corbin (Easy Kremer win) +1
Brewers - Miley (This is a Miley win assuming health)
Cubs - Shoto Imanga (I'll give this to Kremer since Imanga is a wild card, and I'm being nice). +1
Reds - Lively (Kremer win) +1
Pirates - Oviedo (Oviedo had a slightly better FIP, I'm going 'push' here) +.5
Cardinals - Gibson (former Oriole, easy win for Gibson)
Dodgers - Not wasting my time (They have 10 better probably lol. Kremer loss)
Diamonbacks - Pfaadt (Give me Pfaadt all day)
Padres - Waldron (Kremer win) +1
Giants - Ray (Ray easy)
Rockies - Hudson (Kremer easy) +1
So by the count of this, I personally have Kremer better than 13 other #4 (per depth charts currently). This ranks him #17, which is indeed close to #1, like you insinuated, if you remove the 7.
I am mad you made me do this. But you made me.