I didn't find anything for this season, but Chris Bassitt had the most total batters faced per inning pitched with 150.0+ innings pitched in 2024, with 4.43.

Interpreted as:

MLB players by most TBF/IP and 150+ IP this regular season

	NAME	TBF/IP	IP	TBF	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Chris Bassitt C. Bassitt	4.43	171.0	758	2024	TOR	31	10	14	.417	31	4.16	168	0	0	0	180	79	91	18	70	16	0	2	2	8.84	3.68	2.40	0.95	22.2	9.2	1.46	.333	4.79	105	4.07	100	9.47	0.3
2	Chris Flexen C. Flexen	4.42	160.0	707	2024	CWS	33	3	15	.167	30	4.95	123	0	0	0	180	88	95	24	63	2	0	1	4	6.92	3.54	1.95	1.35	17.4	8.9	1.52	.315	5.34	122	4.79	114	10.13	-9.8
3	MacKenzie Gore M. Gore	4.39	166.1	731	2024	WSH	32	10	12	.455	32	3.90	181	0	0	0	171	72	93	15	65	11	0	0	14	9.79	3.52	2.78	0.81	24.8	8.9	1.42	.340	5.03	95	3.53	86	9.25	10.5
4	Patrick Corbin P. Corbin	4.37	174.2	764	2024	WSH	32	6	13	.316	32	5.62	139	0	0	0	208	109	114	25	54	3	0	1	3	7.16	2.78	2.57	1.29	18.2	7.1	1.50	.337	5.87	137	4.41	108	10.72	-5.9
5	Marcus Stroman M. Stroman	4.36	154.2	675	2024	NYY	30	10	9	.526	29	4.31	113	0	0	1	167	74	81	19	60	8	1	0	2	6.58	3.49	1.88	1.11	16.7	8.9	1.47	.312	4.71	107	4.61	110	9.72	-6.6
6	Frankie Montas Jr. F. Montas Jr.	4.35	150.2	655	2024	TOT	30	7	11	.389	30	4.84	148	0	0	0	140	81	89	24	66	6	0	0	3	8.84	3.94	2.24	1.43	22.6	10.1	1.37	.282	5.32	113	4.70	111	8.36	-7.3
7	Mitch Keller M. Keller	4.34	178.0	773	2024	PIT	31	11	12	.478	31	4.25	166	1	0	0	182	84	90	23	50	15	0	0	1	8.39	2.53	3.32	1.16	21.5	6.5	1.30	.306	4.55	101	4.07	100	9.20	-0.2
8	Andrew Heaney A. Heaney	4.33	160.0	693	2024	TEX	32	5	14	.263	31	4.27	159	0	0	0	159	76	84	23	41	12	0	1	2	8.94	2.31	3.88	1.29	22.9	5.9	1.25	.297	4.73	107	4.03	97	8.94	2.5
9	Brayan Bello B. Bello	4.32	162.1	702	2024	BOS	30	14	8	.636	30	4.49	153	0	0	0	157	81	84	19	64	11	0	0	6	8.48	3.55	2.39	1.05	21.8	9.1	1.36	.303	4.66	106	4.18	101	8.70	-0.9
10	Griffin Canning G. Canning	4.3	171.2	739	2024	LAA	32	6	13	.316	31	5.19	130	0	0	0	174	99	105	31	66	6	1	1	6	6.82	3.46	1.97	1.63	17.6	8.9	1.40	.283	5.50	127	5.25	125	9.12	-19.1
11	Mitch Spence M. Spence	4.3	151.1	651	2024	OAK	35	8	10	.444	24	4.58	126	0	0	0	165	77	79	20	44	6	2	0	8	7.49	2.62	2.86	1.19	19.4	6.8	1.38	.319	4.70	119	4.20	106	9.81	-4.3
12	Aaron Civale A. Civale	4.28	161.0	689	2024	TOT	31	8	9	.471	31	4.36	149	0	0	0	158	78	82	29	52	6	0	0	1	8.33	2.91	2.87	1.62	21.6	7.5	1.30	.285	4.58	110	4.73	118	8.83	-12.9
13	Mitchell Parker M. Parker	4.28	151.0	646	2024	WSH	29	6	10	.375	29	4.29	133	0	0	0	154	72	82	18	43	2	0	0	7	7.93	2.56	3.09	1.07	20.6	6.7	1.30	.302	4.89	105	3.84	94	9.18	4.3
14	Tyler Anderson T. Anderson	4.27	179.1	765	2024	LAA	31	10	15	.400	31	3.81	142	0	0	0	158	76	83	24	73	7	0	2	3	7.13	3.66	1.95	1.20	18.6	9.5	1.29	.258	4.17	93	4.65	111	7.93	-8.4
15	Ryan Feltner R. Feltner	4.26	162.1	692	2024	COL	30	3	10	.231	30	4.49	138	0	0	0	165	81	94	20	52	7	0	0	4	7.65	2.88	2.65	1.11	19.9	7.5	1.34	.305	5.21	96	4.15	97	9.15	2.2
16	Colin Rea C. Rea	4.26	167.2	714	2024	MIL	32	12	6	.667	27	4.29	135	0	0	1	169	80	83	29	43	10	1	1	2	7.25	2.31	3.14	1.56	18.9	6.0	1.26	.282	4.46	104	4.75	116	9.07	-11.9
17	Kyle Gibson K. Gibson	4.26	169.2	722	2024	STL	30	8	8	.500	30	4.24	151	0	0	0	161	80	91	23	68	4	0	1	5	8.01	3.61	2.22	1.22	20.9	9.4	1.35	.290	4.83	105	4.41	111	8.54	-8.6
18	Brady Singer B. Singer	4.24	179.2	762	2024	KCR	32	9	13	.409	32	3.71	170	0	0	0	175	74	77	22	54	10	0	0	2	8.52	2.71	3.15	1.10	22.3	7.1	1.27	.302	3.86	88	3.93	96	8.77	3.2
19	Charlie Morton C. Morton	4.24	165.1	701	2024	ATL	30	8	10	.444	30	4.19	167	0	0	0	154	77	85	23	65	18	0	1	2	9.09	3.54	2.57	1.25	23.8	9.3	1.32	.306	4.63	100	4.45	112	8.38	-9.1
20	Austin Gomber A. Gomber	4.22	165.0	696	2024	COL	30	5	12	.294	30	4.75	116	0	0	0	178	87	89	30	38	1	0	0	3	6.33	2.07	3.05	1.64	16.7	5.5	1.31	.290	4.85	102	4.83	113	9.71	-9.6
21	Jose Quintana J. Quintana	4.21	170.1	717	2024	NYM	31	10	10	.500	31	3.75	135	0	0	0	150	71	73	22	63	11	0	0	7	7.13	3.33	2.14	1.16	18.8	8.8	1.25	.263	3.86	95	4.56	113	7.93	-10.4
22	Carlos Rodón C. Rodón	4.21	175.0	736	2024	NYY	32	16	9	.640	32	3.96	195	0	0	0	157	77	81	31	57	10	0	0	3	10.03	2.93	3.42	1.59	26.5	7.7	1.22	.284	4.17	99	4.38	104	8.07	-3
23	Luis Gil L. Gil	4.2	151.2	637	2024	NYY	29	15	7	.682	29	3.50	171	0	0	0	104	59	60	18	77	8	0	0	6	10.15	4.57	2.22	1.07	26.8	12.1	1.19	.237	3.56	87	4.13	98	6.17	1.5
24	Zack Littell Z. Littell	4.2	156.1	656	2024	TBR	29	8	10	.444	29	3.63	141	0	0	0	164	63	68	22	31	5	0	0	0	8.12	1.78	4.55	1.27	21.5	4.7	1.25	.311	3.91	94	3.88	98	9.44	1.4
25	JP Sears	4.2	180.2	758	2024	OAK	32	11	13	.458	32	4.38	137	0	0	0	172	88	93	28	49	14	0	0	0	6.82	2.44	2.80	1.39	18.1	6.5	1.22	.272	4.63	114	4.70	119	8.57	-15.5