The American Lung Association joined many other organizations in signing a statement recommending against stem cell therapy for COPD. The concerns of these groups include:
cost
potential for harm
lack of evidence that the therapy is beneficial to humans
https://www.thoracic.org/members/assemblies/assemblies/rcmb/working-groups/stem-cell/resources/statement-on-unproven-stem-cell-interventions-for-lung-diseases.pdf
However there is a good explanation of stem cell treatment here. The stress it is a treatment, not a cure for COPD
https://stemcellthailand.org/therapies/copd-chronic-obstructive-pulmonary-disease/
Some studies suggest that ELOM-080, a phytomedicine, has shown efficacy in reducing exacerbations in chronic bronchitis and COPD patients.

In November 2024, a study found that a single dose of benralizumab administered during acute exacerbations of asthma or COPD was more effective than standard steroid tablets. The trial reported a 30% reduction in the need for additional treatment and hospitalizations, suggesting potential benefits in acute settings.

Regulatory Status: As of now, benralizumab is not approved for COPD treatment. Its use remains off-label, and further research is needed to establish its safety and efficacy in COPD patients.
https://www.reuters.com/business/healthcare-pharmaceuticals/astrazeneca-asthma-drug-more-effective-during-attack-than-steroids-study-finds-2024-11-27/
Intravenous Laser Therapy lacks strong scientific support for COPD and should be approached with caution.

This article reviews different types of treatment for COPD
https://www.medicalnewstoday.com/articles/gummy-bears-for-copd#summary
The other thing that may help is if you do a search for current/upcoming medical trials, that way you get the new medications before they are widely released.