Finasteride alone won't reverse that much, it stops the path for testosterone becoming DHT (the cause of androgenic alopecia). Taken orally, it stops or slows
all hair loss.
Minoxadil increases blood flow and restores the natural growth cycle lengths of weakened follicles. This is applied topically, and promotes hair growth pretty much anywhere - beard, crown, temples. You can take it orally, and it will promote hair growth everywhere (more body hair). However, it can't fix follicles already dormant or scarred over. So if things are already bald, it may not give the results you want.
A word of warning that about 5% of those who take Minoxadil experience a shedding period where it gets worse. Because it restores normal hair follicles growth cycles, this includes the process of pushing out old hairs. This is not permanent and will last, at most, a month. This is why most providers like "Keeps" will try to sell in batches of 3 months.
In 2026, a new drug will finish phase 3 human trials. That one targets (IIRC) stem cells and can restore even advanced hair loss where the follicles are dormant or dead. Very exciting!