I couldn't find anything for this season, but Cal Raleigh had the fewest RBIs with 100+ RBIs in 2024, with 100 RBIs.

Interpreted as:

fastest MLB player to 100 or more rbis this regular season

	NAME	RBI	SEASON	TM	G	AB	R	H	2B	3B	HR	BB	HBP	SO	SB	CS	PA	TB	XBH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Cal Raleigh C. Raleigh	100	2024	SEA	153	546	73	120	16	0	34	70	6	176	6	1	628	238	50	6	4	7	.220	.312	.436	.748	80	6.3	.323	117	12.3
2	Eugenio Suárez E. Suárez	101	2024	ARI	158	571	90	146	28	2	30	49	9	176	2	1	640	268	60	11	0	10	.256	.319	.469	.788	89	14	.337	115	11.6
3	Anthony Santander A. Santander	102	2024	BAL	155	595	91	140	25	2	44	58	7	129	2	0	665	301	71	5	3	9	.235	.308	.506	.814	97	18.7	.345	129	22
4	Vladimir Guerrero Jr. V. Guerrero Jr.	103	2024	TOR	159	616	98	199	44	1	30	72	5	96	2	2	697	335	75	4	12	16	.323	.396	.544	.940	131	49.2	.398	165	51.8
5	Marcell Ozuna M. Ozuna	104	2024	ATL	162	606	96	183	31	0	39	74	3	170	1	0	687	331	70	4	2	23	.302	.378	.546	.925	127	46.6	.395	154	44
6	Salvador Perez S. Perez	104	2024	KCR	158	590	58	160	28	0	27	44	11	129	0	0	651	269	55	6	9	17	.271	.330	.456	.786	89	13	.335	115	10.9
7	Kyle Schwarber K. Schwarber	104	2024	PHI	150	573	110	142	22	0	38	106	5	197	5	3	692	278	60	8	4	6	.248	.366	.485	.851	112	31	.366	135	29.2
8	Manny Machado M. Machado	105	2024	SDP	152	593	77	163	30	0	29	45	1	124	11	2	643	280	59	4	6	25	.275	.325	.472	.797	91	15.3	.340	122	16.6
9	Josh Naylor J. Naylor	108	2024	CLE	152	563	84	137	27	0	31	58	7	105	6	2	632	257	58	4	7	17	.243	.320	.456	.776	85	10.9	.332	118	13.2
10	Juan Soto J. Soto	109	2024	NYY	157	576	128	166	31	4	41	129	4	119	7	4	713	328	76	4	2	10	.288	.419	.569	.989	147	63.4	.421	180	65.2
11	Bobby Witt Jr. B. Witt Jr.	109	2024	KCR	161	636	125	211	45	11	32	57	8	106	31	12	709	374	88	8	9	4	.332	.389	.588	.977	140	56.8	.410	167	54.5
12	Willy Adames W. Adames	112	2024	MIL	161	610	93	153	33	0	32	74	1	173	21	4	688	282	65	3	3	12	.251	.331	.462	.794	98	17.6	.342	119	15.8
13	Brent Rooker B. Rooker	112	2024	OAK	145	546	82	160	26	2	39	59	5	177	11	3	614	307	67	4	4	5	.293	.365	.562	.927	112	40.5	.392	164	45
14	José Ramírez J. Ramírez	118	2024	CLE	158	620	114	173	39	2	39	54	1	82	41	7	681	333	80	6	12	9	.279	.335	.537	.872	109	29.6	.364	141	32.2
15	Shohei Ohtani S. Ohtani	130	2024	LAD	159	636	134	197	38	7	54	81	6	162	59	4	728	411	99	5	10	7	.310	.390	.646	1.036	156	70.5	.431	181	70.3
16	Aaron Judge A. Judge	144	2024	NYY	158	559	122	180	36	1	58	133	9	171	10	0	703	392	95	2	20	22	.322	.458	.701	1.159	176	93.7	.476	219	95.5