I found a
data sheet for the Osram
P RF CLAS GL 125 6.5 W/827 E27 and it seems to be Retrofit CLASSIC GLOBE. So is aimed more for how it looks than for a set output, however it does say 806 lumen which is not a bad output for a 6.5 watt bulb.
I also had problems, clearly room was designed to have a 100 watt or more central tungsten lamp, and it seems most LED bulbs are designed to replace a 60 watt tungsten, and also the distribution of light also alters, to get the spread I wanted and the lumen the single bulb needed to be replaced with a multi bulb chandelier, in my case 8 x 6W LED and still we need to use uplighters, cabinet lights, and spot lights to do light intensive work like my wife's many crafts.
The problem is that also means multiple switches to turn on the lights, my cure is google Nest Mini's and voice commands, others may use Alexa either result is being able to use voice commands.
I found the move to LED far from satisfactory, main house has 7 main rooms, of them 5 have had extra lights fitted, and the kitchen really could do with extras, using under counter lights and hob light to supplement the main lights. Rest chandeliers fitted, or extra pendent or spot lights.
We have one odd lamp with LED filaments. These lamps
like you have fitted should give a better spread, however when visiting pubs with these lamps I have a problem reading the menu. They do seem mainly used for decoration, but my cabinet lights are designed for decoration
however turn to white and also reduce the dimming and they can add a huge amount of light to the room. All lights on, and at max, likely around 120 watt of lighting in the room, although rare they are all turned up full.
The main change was tungsten shone in nearly all directions, the LED is in the main directional and so using the white ceiling to defuse and spread the light is important.