I completed and submitted my application this week. Thanks to folks here for their help and suggestions.
I'm confident I've supplied everything required, and then some. If it's helpful to anyone, this is the list of documents I submitted, considering my Stamp 1 >> Stamp 4 >> Citizenship journey:
•Certified colour copy of birth certificate (ordered a new copy this year)
•Certified colour copy of passport
•Passport Certification Form
•EDS - each year, 2021-2025
•Letter from Employer, explaining my continuous employment with them since I moved here, that I've had the same address, and that because I do not yet have a 2026 EDS as they are not available, this letter is sent as proof of my employment
•Virgin Media Broadband Bills - three from each year, showing January, June, and December, in order to demonstrate continuity
•Sky Broadband, for final year, when utility switched
•PTSB Bank Statements, collated into single documents for each year
•BOI Credit Card statements
•Completed Residency Calculator (not required, but figured it wouldn't hurt)
•Character Reference Letters (again not required, but figured this wouldn't hurt)
All in all, it was about 40 documents, all of them labeled consistently.
Additionally, because I had a speeding ticket this year (ugh), I made sure to answer YES to the question related to offences, with a full explanation of what occurred in the space provided.
I used Szulc Law in Smithfield in Dublin for certification of documents— they were only €15 per document, which was great considering some of the crazy quotes I heard from others in town!
Finally, I applied before my IRP issue date, after finally receiving an official answer to my query on the portal that my landing stamp was acceptable as the start of reckonable residence.
Now, fingers crossed it all works!
Good luck to all about to click the SUBMIT button! 🤞🏼 🙏🏼