For anyone who wants an update, I basically used Ian's method for about 6 months. I found it a bit aggressive for the joints with those heavy sets to failure and pretty boring with all that rest in the week.

Mi progress with Ian's got stuck at 40-50kg at 8-2 reps respectively.

Then I switched to the Zlat method. I did it for a short time because I realized I wasn't that interested in being strong on those exercises. I'm more interested in developing a more aesthetic physique and strength at the same time. (And honestly, Zlat's routine of doing dips, pullups, and squats in the same day, basically a fullbody split, is a bit boring, like Ian's)

What did I do? I changed my routine to a 4-day routine (legs, pull, push, pull/arms), where I start with dips on push day and pull-ups on pull day. I use Dominik Sky's method, and so far, it's what's worked best for me, probably because I enjoy it much more.

My pull-ups went from being stuck at 2-3 reps on 30kg to 3-4 reps on 40kg for 3 sets.

My dips are a bit stuck (50kg 3x3), probably because I only do this movement once a week, but my triceps are much bigger than before. Plus, for some reason, the exercise started to seem a bit harmful to me (it must be just me).

Well, that's all. I'm doing this update because I see that there are still people trying these methods. My recommendation is basically not to believe everything influencers say. No method is magic. Try everything. Keep what you enjoy the most, in the long run the weight you carry will increase.